42031120986 has 12 divisors (see below), whose sum is σ = 91067428842. Its totient is φ = 14010373656.

The previous prime is 42031120969. The next prime is 42031121039. The reversal of 42031120986 is 68902113024.

42031120986 is a `hidden beast` number, since 420 + 31 + 120 + 9 + 86 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36948143961 + 5082977025 = 192219^2 + 71295^2 .

It is a super-2 number, since 2×42031120986² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42031120986.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1167531121 + ... + 1167531156.

Almost surely, 2^42031120986 is an apocalyptic number.

42031120986 is an abundant number, since it is smaller than the sum of its proper divisors (49036307856).

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

42031120986 is a wasteful number, since it uses less digits than its factorization.

42031120986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335062285 (or 2335062282 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 42031120986 in words is "forty-two billion, thirty-one million, one hundred twenty thousand, nine hundred eighty-six".