1042639392 has 48 divisors (see below), whose sum is σ = 2744642880. Its totient is φ = 346566912.

The previous prime is 1042639387. The next prime is 1042639397. The reversal of 1042639392 is 2939362401.

It is an interprime number because it is at equal distance from previous prime (1042639387) and next prime (1042639397).

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1042639392.

It is not an unprimeable number, because it can be changed into a prime (1042639397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19338 + ... + 49590.

It is an arithmetic number, because the mean of its divisors is an integer number (57180060).

Almost surely, 2^1042639392 is an apocalyptic number.

1042639392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1042639392 is an abundant number, since it is smaller than the sum of its proper divisors (1702003488).

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

1042639392 is a wasteful number, since it uses less digits than its factorization.

1042639392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30625 (or 30617 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 1042639392 is about 32289.9270980905. The cubic root of 1042639392 is about 1014.0157710668.

The spelling of 1042639392 in words is "one billion, forty-two million, six hundred thirty-nine thousand, three hundred ninety-two".