1042207731 has 12 divisors (see below), whose sum is σ = 1511272152. Its totient is φ = 692100096.

The previous prime is 1042207723. The next prime is 1042207769. The reversal of 1042207731 is 1377022401.

It is a happy number.

It is not a de Polignac number, because 1042207731 - 2³ = 1042207723 is a prime.

It is a super-2 number, since 2×1042207731² = 2172393909112336722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1042207695 and 1042207704.

It is not an unprimeable number, because it can be changed into a prime (1042207781) 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, 222981 + ... + 227606.

It is an arithmetic number, because the mean of its divisors is an integer number (125939346).

Almost surely, 2^1042207731 is an apocalyptic number.

1042207731 is a deficient number, since it is larger than the sum of its proper divisors (469064421).

1042207731 is a wasteful number, since it uses less digits than its factorization.

1042207731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450850 (or 450847 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 1042207731 is about 32283.2422628211. The cubic root of 1042207731 is about 1013.8758148863.

The spelling of 1042207731 in words is "one billion, forty-two million, two hundred seven thousand, seven hundred thirty-one".