542631 has 8 divisors (see below), whose sum is σ = 728064. Its totient is φ = 359480.

The previous prime is 542603. The next prime is 542683. The reversal of 542631 is 136245.

It is a happy number.

542631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 542631 - 2⁵ = 542599 is a prime.

It is a super-2 number, since 2×542631² = 588896804322, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 5⁵ + 4⁴ + 6⁵ + 2⁵ + 3¹² + 1 .

It is a junction number, because it is equal to n+sod(n) for n = 542598 and 542607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100 + ... + 1046.

It is an arithmetic number, because the mean of its divisors is an integer number (91008).

2⁵⁴²⁶³¹ is an apocalyptic number.

542631 is a deficient number, since it is larger than the sum of its proper divisors (185433).

542631 is a wasteful number, since it uses less digits than its factorization.

542631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141.

The product of its digits is 720, while the sum is 21.

The square root of 542631 is about 736.6349163595. The cubic root of 542631 is about 81.5645667479.

Adding to 542631 its reverse (136245), we get a palindrome (678876).

The spelling of 542631 in words is "five hundred forty-two thousand, six hundred thirty-one".