2712139 has 4 divisors (see below), whose sum is σ = 2775256. Its totient is φ = 2649024.

The previous prime is 2712133. The next prime is 2712161. The reversal of 2712139 is 9312172.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2712139 - 2³ = 2712131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2712131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31494 + ... + 31579.

It is an arithmetic number, because the mean of its divisors is an integer number (693814).

2^2712139 is an apocalyptic number.

2712139 is a deficient number, since it is larger than the sum of its proper divisors (63117).

2712139 is an equidigital number, since it uses as much as digits as its factorization.

2712139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63116.

The product of its digits is 756, while the sum is 25.

The square root of 2712139 is about 1646.8573101517. The cubic root of 2712139 is about 139.4560354427.

The spelling of 2712139 in words is "two million, seven hundred twelve thousand, one hundred thirty-nine".