42031951992 has 48 divisors (see below), whose sum is σ = 114136971000. Its totient is φ = 13973674176.

The previous prime is 42031951991. The next prime is 42031951993. The reversal of 42031951992 is 29915913024.

42031951992 is a `hidden beast` number, since 42 + 0 + 3 + 1 + 9 + 519 + 92 = 666.

It is an interprime number because it is at equal distance from previous prime (42031951991) and next prime (42031951993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42031951991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 742867 + ... + 797442.

Almost surely, 2^42031951992 is an apocalyptic number.

It is an amenable number.

42031951992 is an abundant number, since it is smaller than the sum of its proper divisors (72105019008).

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

42031951992 is a wasteful number, since it uses less digits than its factorization.

42031951992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540700 (or 1540693 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 42031951992 in words is "forty-two billion, thirty-one million, nine hundred fifty-one thousand, nine hundred ninety-two".