2742139 has 2 divisors, whose sum is σ = 2742140. Its totient is φ = 2742138.

The previous prime is 2742127. The next prime is 2742161. The reversal of 2742139 is 9312472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2742139 - 2¹³ = 2733947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2742119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1371069 + 1371070.

It is an arithmetic number, because the mean of its divisors is an integer number (1371070).

2^2742139 is an apocalyptic number.

2742139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2742139 is an equidigital number, since it uses as much as digits as its factorization.

2742139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 2742139 is about 1655.9405182554. The cubic root of 2742139 is about 139.9683431824.

The spelling of 2742139 in words is "two million, seven hundred forty-two thousand, one hundred thirty-nine".