120921684 has 48 divisors (see below), whose sum is σ = 304593408. Its totient is φ = 37116288.

The previous prime is 120921659. The next prime is 120921709. The reversal of 120921684 is 486129021.

It is an interprime number because it is at equal distance from previous prime (120921659) and next prime (120921709).

It is a super-2 number, since 2×120921684² = 29244107322791712, which contains 22 as substring.

It is a congruent number.

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, 94054 + ... + 95330.

It is an arithmetic number, because the mean of its divisors is an integer number (6345696).

Almost surely, 2^120921684 is an apocalyptic number.

It is an amenable number.

120921684 is an abundant number, since it is smaller than the sum of its proper divisors (183671724).

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

120921684 is a wasteful number, since it uses less digits than its factorization.

120921684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904 (or 1902 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 120921684 is about 10996.4396056178. The cubic root of 120921684 is about 494.5020111609.

The spelling of 120921684 in words is "one hundred twenty million, nine hundred twenty-one thousand, six hundred eighty-four".