121918504 has 16 divisors (see below), whose sum is σ = 232345620. Its totient is φ = 59959680.

The previous prime is 121918483. The next prime is 121918513. The reversal of 121918504 is 405819121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 92736900 + 29181604 = 9630^2 + 5402^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124429 + ... + 125404.

Almost surely, 2^121918504 is an apocalyptic number.

It is an amenable number.

121918504 is a deficient number, since it is larger than the sum of its proper divisors (110427116).

121918504 is a wasteful number, since it uses less digits than its factorization.

121918504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249900 (or 249896 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 121918504 is about 11041.6712503135. The cubic root of 121918504 is about 495.8571063400.

The spelling of 121918504 in words is "one hundred twenty-one million, nine hundred eighteen thousand, five hundred four".