542457 has 20 divisors (see below), whose sum is σ = 836836. Its totient is φ = 349920.

The previous prime is 542447. The next prime is 542461. The reversal of 542457 is 754245.

542457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 210681 + 331776 = 459^2 + 576^2 .

It is not a de Polignac number, because 542457 - 2⁴ = 542441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542457.

It is not an unprimeable number, because it can be changed into a prime (542447) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2907 + ... + 3087.

2⁵⁴²⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

542457 is a deficient number, since it is larger than the sum of its proper divisors (294379).

542457 is a wasteful number, since it uses less digits than its factorization.

542457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 221 counting only the distinct ones).

The product of its digits is 5600, while the sum is 27.

The square root of 542457 is about 736.5168022523. The cubic root of 542457 is about 81.5558476540. Note that the first 3 decimals are identical.

It can be divided in two parts, 542 and 457, that added together give a palindrome (999).

The spelling of 542457 in words is "five hundred forty-two thousand, four hundred fifty-seven".