342057 has 16 divisors (see below), whose sum is σ = 509760. Its totient is φ = 202752.

The previous prime is 342049. The next prime is 342059. The reversal of 342057 is 750243.

It is a happy number.

It is not a de Polignac number, because 342057 - 2³ = 342049 is a prime.

342057 is a lucky number.

It is a zygodrome in base 6.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342057.

It is not an unprimeable number, because it can be changed into a prime (342059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 793 + ... + 1145.

It is an arithmetic number, because the mean of its divisors is an integer number (31860).

2³⁴²⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

342057 is a deficient number, since it is larger than the sum of its proper divisors (167703).

342057 is a wasteful number, since it uses less digits than its factorization.

342057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 342057 is about 584.8563926298. The cubic root of 342057 is about 69.9357914619.

The spelling of 342057 in words is "three hundred forty-two thousand, fifty-seven".