342891 has 12 divisors (see below), whose sum is σ = 511680. Its totient is φ = 221040.

The previous prime is 342889. The next prime is 342899. The reversal of 342891 is 198243.

It is not a de Polignac number, because 342891 - 2¹ = 342889 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342891.

It is not an unprimeable number, because it can be changed into a prime (342899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336 + ... + 893.

It is an arithmetic number, because the mean of its divisors is an integer number (42640).

2³⁴²⁸⁹¹ is an apocalyptic number.

342891 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

342891 is a deficient number, since it is larger than the sum of its proper divisors (168789).

342891 is a wasteful number, since it uses less digits than its factorization.

342891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266 (or 1263 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 342891 is about 585.5689540951. The cubic root of 342891 is about 69.9925842484.

The spelling of 342891 in words is "three hundred forty-two thousand, eight hundred ninety-one".