2139004 has 24 divisors (see below), whose sum is σ = 4336640. Its totient is φ = 904176.

The previous prime is 2138999. The next prime is 2139013. The reversal of 2139004 is 4009312.

It is a super-2 number, since 2×2139004² = 9150676224032, which contains 22 as substring.

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, 1729 + ... + 2695.

2^2139004 is an apocalyptic number.

It is an amenable number.

2139004 is an abundant number, since it is smaller than the sum of its proper divisors (2197636).

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

2139004 is a wasteful number, since it uses less digits than its factorization.

2139004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057 (or 1055 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2139004 is about 1462.5334184216. The cubic root of 2139004 is about 128.8458788760.

The spelling of 2139004 in words is "two million, one hundred thirty-nine thousand, four".