120912456420 has 144 divisors (see below), whose sum is σ = 432684715008. Its totient is φ = 26745603840.

The previous prime is 120912456407. The next prime is 120912456433. The reversal of 120912456420 is 24654219021.

It is a happy number.

120912456420 is a `hidden beast` number, since 1 + 2 + 0 + 9 + 1 + 2 + 4 + 5 + 642 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (120912456407) and next prime (120912456433).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1508719 + ... + 1586838.

Almost surely, 2^120912456420 is an apocalyptic number.

120912456420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120912456420 is an abundant number, since it is smaller than the sum of its proper divisors (311772258588).

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

120912456420 is a wasteful number, since it uses less digits than its factorization.

120912456420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095610 (or 3095605 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 120912456420 in words is "one hundred twenty billion, nine hundred twelve million, four hundred fifty-six thousand, four hundred twenty".