1000139 has 6 divisors (see below), whose sum is σ = 1163484. Its totient is φ = 857220.

The previous prime is 1000133. The next prime is 1000151. The reversal of 1000139 is 9310001.

It is not a de Polignac number, because 1000139 - 2⁸ = 999883 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1000133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10157 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (193914).

2^1000139 is an apocalyptic number.

1000139 is a deficient number, since it is larger than the sum of its proper divisors (163345).

1000139 is an equidigital number, since it uses as much as digits as its factorization.

1000139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20425 (or 20418 counting only the distinct ones).

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 1000139 is about 1000.0694975850. The cubic root of 1000139 is about 100.0046331187.

The spelling of 1000139 in words is "one million, one hundred thirty-nine", and thus it is an aban number.