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121624093 = 643189151
BaseRepresentation
bin1110011111111…
…01011000011101
322110212010220001
413033331120131
5222113432333
620022454301
73004534123
oct717753035
9273763801
10121624093
1162720a88
1234894391
131c275226
141221d913
15aa26b7d
hex73fd61d

121624093 has 4 divisors (see below), whose sum is σ = 121813888. Its totient is φ = 121434300.

The previous prime is 121624091. The next prime is 121624117. The reversal of 121624093 is 390426121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 390426121 = 3112594391.

It is a cyclic number.

It is not a de Polignac number, because 121624093 - 21 = 121624091 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 (121624091) 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, 93933 + ... + 95218.

It is an arithmetic number, because the mean of its divisors is an integer number (30453472).

Almost surely, 2121624093 is an apocalyptic number.

It is an amenable number.

121624093 is a deficient number, since it is larger than the sum of its proper divisors (189795).

121624093 is an equidigital number, since it uses as much as digits as its factorization.

121624093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189794.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 121624093 is about 11028.3313787717. The cubic root of 121624093 is about 495.4576497376.

The spelling of 121624093 in words is "one hundred twenty-one million, six hundred twenty-four thousand, ninety-three".

Divisors: 1 643 189151 121624093