1139242956 has 24 divisors (see below), whose sum is σ = 2658787824. Its totient is φ = 379668480.

The previous prime is 1139242939. The next prime is 1139242997. The reversal of 1139242956 is 6592429311.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92116 + ... + 103748.

It is an arithmetic number, because the mean of its divisors is an integer number (110782826).

Almost surely, 2^1139242956 is an apocalyptic number.

It is an amenable number.

1139242956 is an abundant number, since it is smaller than the sum of its proper divisors (1519544868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1139242956 is a wasteful number, since it uses less digits than its factorization.

1139242956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19801 (or 19799 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 1139242956 is about 33752.6733163464. The cubic root of 1139242956 is about 1044.4126354362.

The spelling of 1139242956 in words is "one billion, one hundred thirty-nine million, two hundred forty-two thousand, nine hundred fifty-six".