428542 has 8 divisors (see below), whose sum is σ = 645696. Its totient is φ = 213312.

The previous prime is 428539. The next prime is 428551. The reversal of 428542 is 245824.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403 + ... + 1009.

It is an arithmetic number, because the mean of its divisors is an integer number (80712).

2⁴²⁸⁵⁴² is an apocalyptic number.

428542 is a deficient number, since it is larger than the sum of its proper divisors (217154).

428542 is a wasteful number, since it uses less digits than its factorization.

428542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962.

The product of its digits is 2560, while the sum is 25.

The square root of 428542 is about 654.6311938794. The cubic root of 428542 is about 75.3930183715.

The spelling of 428542 in words is "four hundred twenty-eight thousand, five hundred forty-two".