1139142005 has 8 divisors (see below), whose sum is σ = 1385696472. Its totient is φ = 898829568.

The previous prime is 1139141987. The next prime is 1139142019. The reversal of 1139142005 is 5002419311.

It can be written as a sum of positive squares in 4 ways, for example, as 18164644 + 1120977361 = 4262^2 + 33481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1139142005 - 2⁸ = 1139141749 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1560104 + ... + 1560833.

It is an arithmetic number, because the mean of its divisors is an integer number (173212059).

Almost surely, 2^1139142005 is an apocalyptic number.

It is an amenable number.

1139142005 is a deficient number, since it is larger than the sum of its proper divisors (246554467).

1139142005 is an equidigital number, since it uses as much as digits as its factorization.

1139142005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121015.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1139142005 is about 33751.1778312995. The cubic root of 1139142005 is about 1044.3817852376.

The spelling of 1139142005 in words is "one billion, one hundred thirty-nine million, one hundred forty-two thousand, five".