542742 has 24 divisors (see below), whose sum is σ = 1156776. Its totient is φ = 169728.

The previous prime is 542723. The next prime is 542747. The reversal of 542742 is 247245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1578 + ... + 1890.

It is an arithmetic number, because the mean of its divisors is an integer number (48199).

2⁵⁴²⁷⁴² is an apocalyptic number.

542742 is an abundant number, since it is smaller than the sum of its proper divisors (614034).

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

542742 is a wasteful number, since it uses less digits than its factorization.

542742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 335 counting only the distinct ones).

The product of its digits is 2240, while the sum is 24.

The square root of 542742 is about 736.7102551207. The cubic root of 542742 is about 81.5701279547.

Adding to 542742 its reverse (247245), we get a palindrome (789987).

The spelling of 542742 in words is "five hundred forty-two thousand, seven hundred forty-two".