391242038120 has 32 divisors (see below), whose sum is σ = 881518982400. Its totient is φ = 156279144768.

The previous prime is 391242038087. The next prime is 391242038141. The reversal of 391242038120 is 21830242193.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6773084 + ... + 6830603.

It is an arithmetic number, because the mean of its divisors is an integer number (27547468200).

Almost surely, 2^391242038120 is an apocalyptic number.

It is an amenable number.

391242038120 is an abundant number, since it is smaller than the sum of its proper divisors (490276944280).

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

391242038120 is a wasteful number, since it uses less digits than its factorization.

391242038120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13604417 (or 13604413 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 391242038120 in words is "three hundred ninety-one billion, two hundred forty-two million, thirty-eight thousand, one hundred twenty".