342738 has 32 divisors (see below), whose sum is σ = 832320. Its totient is φ = 103680.

The previous prime is 342733. The next prime is 342757. The reversal of 342738 is 837243.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (342733) 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, 306 + ... + 882.

It is an arithmetic number, because the mean of its divisors is an integer number (26010).

2³⁴²⁷³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416160).

342738 is an abundant number, since it is smaller than the sum of its proper divisors (489582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

342738 is a wasteful number, since it uses less digits than its factorization.

342738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 593 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 342738 is about 585.4382973465. The cubic root of 342738 is about 69.9821723308.

It can be divided in two parts, 34 and 2738, that added together give a palindrome (2772).

The spelling of 342738 in words is "three hundred forty-two thousand, seven hundred thirty-eight".