121902957 has 24 divisors (see below), whose sum is σ = 193179168. Its totient is φ = 73461600.

The previous prime is 121902857. The next prime is 121902983. The reversal of 121902957 is 759209121.

It is a de Polignac number, because none of the positive numbers 2^k-121902957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121902857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14518 + ... + 21320.

It is an arithmetic number, because the mean of its divisors is an integer number (8049132).

Almost surely, 2^121902957 is an apocalyptic number.

It is an amenable number.

121902957 is a deficient number, since it is larger than the sum of its proper divisors (71276211).

121902957 is a wasteful number, since it uses less digits than its factorization.

121902957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7001 (or 6998 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 121902957 is about 11040.9672130661. The cubic root of 121902957 is about 495.8360282759.

The spelling of 121902957 in words is "one hundred twenty-one million, nine hundred two thousand, nine hundred fifty-seven".