121479756 has 48 divisors (see below), whose sum is σ = 300918240. Its totient is φ = 38010880.

The previous prime is 121479727. The next prime is 121479781. The reversal of 121479756 is 657974121.

It is a happy number.

It is a super-2 number, since 2×121479756² = 29514662235639072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130300 + ... + 131228.

It is an arithmetic number, because the mean of its divisors is an integer number (6269130).

Almost surely, 2^121479756 is an apocalyptic number.

It is an amenable number.

121479756 is an abundant number, since it is smaller than the sum of its proper divisors (179438484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121479756 is a wasteful number, since it uses less digits than its factorization.

121479756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594 (or 1592 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 121479756 is about 11021.7855177825. The cubic root of 121479756 is about 495.2615778988.

The spelling of 121479756 in words is "one hundred twenty-one million, four hundred seventy-nine thousand, seven hundred fifty-six".