542790 has 48 divisors (see below), whose sum is σ = 1458288. Its totient is φ = 139968.

The previous prime is 542783. The next prime is 542791. The reversal of 542790 is 97245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542791) by changing a digit.

542790 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 23 ways as a sum of consecutive naturals, for example, 3249 + ... + 3411.

It is an arithmetic number, because the mean of its divisors is an integer number (30381).

2⁵⁴²⁷⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (729144).

542790 is an abundant number, since it is smaller than the sum of its proper divisors (915498).

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

542790 is a wasteful number, since it uses less digits than its factorization.

542790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 542790 is about 736.7428316584. The cubic root of 542790 is about 81.5725325660.

The spelling of 542790 in words is "five hundred forty-two thousand, seven hundred ninety".