342157 has 4 divisors (see below), whose sum is σ = 343360. Its totient is φ = 340956.

The previous prime is 342143. The next prime is 342179. The reversal of 342157 is 751243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342157.

It is not an unprimeable number, because it can be changed into a prime (342107) 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, 94 + ... + 832.

It is an arithmetic number, because the mean of its divisors is an integer number (85840).

2³⁴²¹⁵⁷ is an apocalyptic number.

It is an amenable number.

342157 is a deficient number, since it is larger than the sum of its proper divisors (1203).

342157 is an equidigital number, since it uses as much as digits as its factorization.

342157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202.

The product of its digits is 840, while the sum is 22.

The square root of 342157 is about 584.9418774545. The cubic root of 342157 is about 69.9426060160.

The spelling of 342157 in words is "three hundred forty-two thousand, one hundred fifty-seven".