542663 has 4 divisors (see below), whose sum is σ = 592008. Its totient is φ = 493320.

The previous prime is 542603. The next prime is 542683. The reversal of 542663 is 366245.

542663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542663 - 2⁶ = 542599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24656 + ... + 24677.

It is an arithmetic number, because the mean of its divisors is an integer number (148002).

2⁵⁴²⁶⁶³ is an apocalyptic number.

542663 is a deficient number, since it is larger than the sum of its proper divisors (49345).

542663 is a wasteful number, since it uses less digits than its factorization.

542663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49344.

The product of its digits is 4320, while the sum is 26.

The square root of 542663 is about 736.6566364325. The cubic root of 542663 is about 81.5661700565.

The spelling of 542663 in words is "five hundred forty-two thousand, six hundred sixty-three".