1042551688 has 8 divisors (see below), whose sum is σ = 1954784430. Its totient is φ = 521275840.

The previous prime is 1042551677. The next prime is 1042551737. The reversal of 1042551688 is 8861552401.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1023872004 + 18679684 = 31998^2 + 4322^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1042551688.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65159473 + ... + 65159488.

Almost surely, 2^1042551688 is an apocalyptic number.

It is an amenable number.

1042551688 is a deficient number, since it is larger than the sum of its proper divisors (912232742).

1042551688 is a wasteful number, since it uses less digits than its factorization.

1042551688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130318967 (or 130318963 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 1042551688 is about 32288.5689989507. The cubic root of 1042551688 is about 1013.9873381834.

The spelling of 1042551688 in words is "one billion, forty-two million, five hundred fifty-one thousand, six hundred eighty-eight".