1042091656 has 8 divisors (see below), whose sum is σ = 1953921870. Its totient is φ = 521045824.

The previous prime is 1042091641. The next prime is 1042091657. The reversal of 1042091656 is 6561902401.

It can be written as a sum of positive squares in only one way, i.e., 839029156 + 203062500 = 28966^2 + 14250^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1042091657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65130721 + ... + 65130736.

Almost surely, 2^1042091656 is an apocalyptic number.

It is an amenable number.

1042091656 is a deficient number, since it is larger than the sum of its proper divisors (911830214).

1042091656 is a wasteful number, since it uses less digits than its factorization.

1042091656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130261463 (or 130261459 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1042091656 is about 32281.4444534318. Note that the first 4 decimals coincide. The cubic root of 1042091656 is about 1013.8381736365.

The spelling of 1042091656 in words is "one billion, forty-two million, ninety-one thousand, six hundred fifty-six".