342157279 has 2 divisors, whose sum is σ = 342157280. Its totient is φ = 342157278.

The previous prime is 342157273. The next prime is 342157289. The reversal of 342157279 is 972751243.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 342157279 - 2¹⁵ = 342124511 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342157273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171078639 + 171078640.

It is an arithmetic number, because the mean of its divisors is an integer number (171078640).

Almost surely, 2^342157279 is an apocalyptic number.

342157279 is a deficient number, since it is larger than the sum of its proper divisors (1).

342157279 is an equidigital number, since it uses as much as digits as its factorization.

342157279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 342157279 is about 18497.4938572770. The cubic root of 342157279 is about 699.4262502670.

The spelling of 342157279 in words is "three hundred forty-two million, one hundred fifty-seven thousand, two hundred seventy-nine".