342428 has 6 divisors (see below), whose sum is σ = 599256. Its totient is φ = 171212.

The previous prime is 342421. The next prime is 342449. The reversal of 342428 is 824243.

It is an Ulam 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 342428.

It is not an unprimeable number, because it can be changed into a prime (342421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42800 + ... + 42807.

It is an arithmetic number, because the mean of its divisors is an integer number (99876).

2³⁴²⁴²⁸ is an apocalyptic number.

It is an amenable number.

342428 is a deficient number, since it is larger than the sum of its proper divisors (256828).

342428 is a wasteful number, since it uses less digits than its factorization.

342428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85611 (or 85609 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 342428 is about 585.1734785514. The cubic root of 342428 is about 69.9610667852.

The spelling of 342428 in words is "three hundred forty-two thousand, four hundred twenty-eight".