342981 has 8 divisors (see below), whose sum is σ = 508160. Its totient is φ = 228636.

The previous prime is 342971. The next prime is 342989. The reversal of 342981 is 189243.

It is not a de Polignac number, because 342981 - 2⁵ = 342949 is a prime.

It is a super-2 number, since 2×342981² = 235271932722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 12703 = 342981 / (3 + 4 + 2 + 9 + 8 + 1).

It is a Duffinian number.

It is a Curzon 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 342981.

It is not an unprimeable number, because it can be changed into a prime (342989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6325 + ... + 6378.

It is an arithmetic number, because the mean of its divisors is an integer number (63520).

2³⁴²⁹⁸¹ is an apocalyptic number.

It is an amenable number.

342981 is a deficient number, since it is larger than the sum of its proper divisors (165179).

342981 is a wasteful number, since it uses less digits than its factorization.

342981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12712 (or 12706 counting only the distinct ones).

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

The square root of 342981 is about 585.6457973895. The cubic root of 342981 is about 69.9987074591.

The spelling of 342981 in words is "three hundred forty-two thousand, nine hundred eighty-one".