542228 has 12 divisors (see below), whose sum is σ = 954240. Its totient is φ = 269592.

The previous prime is 542219. The next prime is 542237. The reversal of 542228 is 822245.

It is an interprime number because it is at equal distance from previous prime (542219) and next prime (542237).

It is a super-2 number, since 2×542228² = 588022407968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

542228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893 + ... + 1371.

It is an arithmetic number, because the mean of its divisors is an integer number (79520).

2⁵⁴²²²⁸ is an apocalyptic number.

It is an amenable number.

542228 is a deficient number, since it is larger than the sum of its proper divisors (412012).

542228 is a wasteful number, since it uses less digits than its factorization.

542228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 764 counting only the distinct ones).

The product of its digits is 1280, while the sum is 23.

The square root of 542228 is about 736.3613243510. The cubic root of 542228 is about 81.5443696826.

The spelling of 542228 in words is "five hundred forty-two thousand, two hundred twenty-eight".