121876520 has 32 divisors (see below), whose sum is σ = 281637000. Its totient is φ = 47432448.

The previous prime is 121876481. The next prime is 121876537. The reversal of 121876520 is 25678121.

It can be written as a sum of positive squares in 4 ways, for example, as 119727364 + 2149156 = 10942^2 + 1466^2 .

It is a super-2 number, since 2×121876520² = 29707772254620800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39695 + ... + 42654.

Almost surely, 2^121876520 is an apocalyptic number.

121876520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121876520 is an abundant number, since it is smaller than the sum of its proper divisors (159760480).

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

121876520 is a wasteful number, since it uses less digits than its factorization.

121876520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82397 (or 82393 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 121876520 is about 11039.7699251388. The cubic root of 121876520 is about 495.8001818258.

The spelling of 121876520 in words is "one hundred twenty-one million, eight hundred seventy-six thousand, five hundred twenty".