1042256631 has 48 divisors (see below), whose sum is σ = 1551605760. Its totient is φ = 621728640.

The previous prime is 1042256629. The next prime is 1042256651. The reversal of 1042256631 is 1366522401.

It is not a de Polignac number, because 1042256631 - 2¹ = 1042256629 is a prime.

It is a super-2 number, since 2×1042256631² = 2172597769726940322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042256651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4551225 + ... + 4551453.

It is an arithmetic number, because the mean of its divisors is an integer number (32325120).

Almost surely, 2^1042256631 is an apocalyptic number.

1042256631 is a deficient number, since it is larger than the sum of its proper divisors (509349129).

1042256631 is a wasteful number, since it uses less digits than its factorization.

1042256631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1042256631 is about 32283.9996128113. Note that the first 3 decimals coincide. The cubic root of 1042256631 is about 1013.8916715306.

The spelling of 1042256631 in words is "one billion, forty-two million, two hundred fifty-six thousand, six hundred thirty-one".