1042170256 has 20 divisors (see below), whose sum is σ = 2019789004. Its totient is φ = 520934400.

The previous prime is 1042170251. The next prime is 1042170281. The reversal of 1042170256 is 6520712401.

It can be written as a sum of positive squares in 2 ways, for example, as 99680256 + 942490000 = 9984^2 + 30700^2 .

It is a super-2 number, since 2×1042170256² = 2172237684982211072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1042170251) 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 3 ways as a sum of consecutive naturals, for example, 65836 + ... + 80116.

Almost surely, 2^1042170256 is an apocalyptic number.

1042170256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1042170256 is a deficient number, since it is larger than the sum of its proper divisors (977618748).

1042170256 is a wasteful number, since it uses less digits than its factorization.

1042170256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18850 (or 18844 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1042170256 is about 32282.6618481190. The cubic root of 1042170256 is about 1013.8636626539.

Adding to 1042170256 its reverse (6520712401), we get a palindrome (7562882657).

The spelling of 1042170256 in words is "one billion, forty-two million, one hundred seventy thousand, two hundred fifty-six".