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120230101 = 773155537
BaseRepresentation
bin1110010101010…
…01000011010101
322101020022200201
413022221003111
5221234330401
615532540501
72656640035
oct712510325
9271208621
10120230101
1161959722
1234321731
131bba7894
1411d798c5
15a84db01
hex72a90d5

120230101 has 4 divisors (see below), whose sum is σ = 120386412. Its totient is φ = 120073792.

The previous prime is 120230063. The next prime is 120230113. The reversal of 120230101 is 101032021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101032021 = 317318713.

It can be written as a sum of positive squares in 2 ways, for example, as 39050001 + 81180100 = 6249^2 + 9010^2 .

It is a cyclic number.

It is not a de Polignac number, because 120230101 - 27 = 120229973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120237101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76996 + ... + 78541.

It is an arithmetic number, because the mean of its divisors is an integer number (30096603).

Almost surely, 2120230101 is an apocalyptic number.

It is an amenable number.

120230101 is a deficient number, since it is larger than the sum of its proper divisors (156311).

120230101 is an equidigital number, since it uses as much as digits as its factorization.

120230101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156310.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 120230101 is about 10964.9487458902. The cubic root of 120230101 is about 493.5574790527.

Adding to 120230101 its reverse (101032021), we get a palindrome (221262122).

The spelling of 120230101 in words is "one hundred twenty million, two hundred thirty thousand, one hundred one".

Divisors: 1 773 155537 120230101