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121144301 = 149813049
BaseRepresentation
bin1110011100010…
…00001111101101
322102221202201222
413032020033231
5222003104201
620004313125
73000465245
oct716101755
9272852658
10121144301
1162423563
12346a27a5
131c137a25
1412136b25
15a97e91b
hex73883ed

121144301 has 4 divisors (see below), whose sum is σ = 121957500. Its totient is φ = 120331104.

The previous prime is 121144291. The next prime is 121144313. The reversal of 121144301 is 103441121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 103441121 = 714777303.

It can be written as a sum of positive squares in 2 ways, for example, as 38316100 + 82828201 = 6190^2 + 9101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-121144301 is a prime.

It is a super-3 number, since 3×1211443013 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121144301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121144321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406376 + ... + 406673.

It is an arithmetic number, because the mean of its divisors is an integer number (30489375).

Almost surely, 2121144301 is an apocalyptic number.

It is an amenable number.

121144301 is a deficient number, since it is larger than the sum of its proper divisors (813199).

121144301 is an equidigital number, since it uses as much as digits as its factorization.

121144301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813198.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 121144301 is about 11006.5571819711. The cubic root of 121144301 is about 494.8052847737.

Adding to 121144301 its reverse (103441121), we get a palindrome (224585422).

The spelling of 121144301 in words is "one hundred twenty-one million, one hundred forty-four thousand, three hundred one".

Divisors: 1 149 813049 121144301