2457139 has 2 divisors, whose sum is σ = 2457140. Its totient is φ = 2457138.

The previous prime is 2457127. The next prime is 2457179. The reversal of 2457139 is 9317542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2457139 - 2⁷ = 2457011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2457139.

It is not a weakly prime, because it can be changed into another prime (2457179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1228569 + 1228570.

It is an arithmetic number, because the mean of its divisors is an integer number (1228570).

2^2457139 is an apocalyptic number.

2457139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2457139 is an equidigital number, since it uses as much as digits as its factorization.

2457139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 2457139 is about 1567.5263953121. The cubic root of 2457139 is about 134.9407879332.

The spelling of 2457139 in words is "two million, four hundred fifty-seven thousand, one hundred thirty-nine".