1139156 has 24 divisors (see below), whose sum is σ = 2106720. Its totient is φ = 538272.

The previous prime is 1139147. The next prime is 1139191. The reversal of 1139156 is 6519311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6275 + ... + 6453.

It is an arithmetic number, because the mean of its divisors is an integer number (87780).

2^1139156 is an apocalyptic number.

It is an amenable number.

1139156 is a deficient number, since it is larger than the sum of its proper divisors (967564).

1139156 is a wasteful number, since it uses less digits than its factorization.

1139156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 261 counting only the distinct ones).

The product of its digits is 810, while the sum is 26.

The square root of 1139156 is about 1067.3125128096. The cubic root of 1139156 is about 104.4386062159.

Multiplying 1139156 by its sum of digits (26), we get a triangular number (29618056 = T₇₆₉₆).

The spelling of 1139156 in words is "one million, one hundred thirty-nine thousand, one hundred fifty-six".