1304139 has 16 divisors (see below), whose sum is σ = 1848320. Its totient is φ = 816480.

The previous prime is 1304137. The next prime is 1304167. The reversal of 1304139 is 9314031.

It is not a de Polignac number, because 1304139 - 2¹ = 1304137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3252 + ... + 3630.

It is an arithmetic number, because the mean of its divisors is an integer number (115520).

2^1304139 is an apocalyptic number.

1304139 is a deficient number, since it is larger than the sum of its proper divisors (544181).

1304139 is a wasteful number, since it uses less digits than its factorization.

1304139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1304139 is about 1141.9890542383. The cubic root of 1304139 is about 109.2549931651.

The spelling of 1304139 in words is "one million, three hundred four thousand, one hundred thirty-nine".