1056139 has 12 divisors (see below), whose sum is σ = 1255152. Its totient is φ = 870480.

The previous prime is 1056113. The next prime is 1056149. The reversal of 1056139 is 9316501.

It is not a de Polignac number, because 1056139 - 2¹¹ = 1054091 is a prime.

It is a super-2 number, since 2×1056139² = 2230859174642, which contains 22 as substring.

It is a Duffinian number.

1056139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1056109) 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, 6649 + ... + 6805.

It is an arithmetic number, because the mean of its divisors is an integer number (104596).

2^1056139 is an apocalyptic number.

1056139 is a deficient number, since it is larger than the sum of its proper divisors (199013).

1056139 is an equidigital number, since it uses as much as digits as its factorization.

1056139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1056139 is about 1027.6862361635. The cubic root of 1056139 is about 101.8373352428.

The spelling of 1056139 in words is "one million, fifty-six thousand, one hundred thirty-nine".