342747 has 6 divisors (see below), whose sum is σ = 495092. Its totient is φ = 228492.

The previous prime is 342733. The next prime is 342757. The reversal of 342747 is 747243.

It is not a de Polignac number, because 342747 - 2¹⁸ = 80603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 342747.

It is not an unprimeable number, because it can be changed into a prime (342757) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19033 + ... + 19050.

2³⁴²⁷⁴⁷ is an apocalyptic number.

342747 is a deficient number, since it is larger than the sum of its proper divisors (152345).

342747 is a wasteful number, since it uses less digits than its factorization.

342747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38089 (or 38086 counting only the distinct ones).

The product of its digits is 4704, while the sum is 27.

The square root of 342747 is about 585.4459838448. The cubic root of 342747 is about 69.9827848823.

Subtracting 342747 from its reverse (747243), we obtain a square (404496 = 636²).

It can be divided in two parts, 342 and 747, that added together give a square (1089 = 33²).

The spelling of 342747 in words is "three hundred forty-two thousand, seven hundred forty-seven", and thus it is an iban number.