1531787412042 has 96 divisors (see below), whose sum is σ = 3362056274304. Its totient is φ = 503990822400.

The previous prime is 1531787411983. The next prime is 1531787412059. The reversal of 1531787412042 is 2402147871351.

It is a happy number.

1531787412042 is a `hidden beast` number, since 1 + 531 + 7 + 8 + 74 + 1 + 2 + 0 + 42 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 890055742 + ... + 890057462.

It is an arithmetic number, because the mean of its divisors is an integer number (35021419524).

Almost surely, 2^{1531787412042} is an apocalyptic number.

1531787412042 is an abundant number, since it is smaller than the sum of its proper divisors (1830268862262).

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

1531787412042 is a wasteful number, since it uses less digits than its factorization.

1531787412042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244 (or 3241 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 1531787412042 in words is "one trillion, five hundred thirty-one billion, seven hundred eighty-seven million, four hundred twelve thousand, forty-two".