542993 has 4 divisors (see below), whose sum is σ = 592368. Its totient is φ = 493620.

The previous prime is 542987. The next prime is 542999. The reversal of 542993 is 399245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (542987) and next prime (542999).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542999) 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, 24671 + ... + 24692.

It is an arithmetic number, because the mean of its divisors is an integer number (148092).

2⁵⁴²⁹⁹³ is an apocalyptic number.

It is an amenable number.

542993 is a deficient number, since it is larger than the sum of its proper divisors (49375).

542993 is a wasteful number, since it uses less digits than its factorization.

542993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49374.

The product of its digits is 9720, while the sum is 32.

The square root of 542993 is about 736.8805873410. The cubic root of 542993 is about 81.5827005010.

The spelling of 542993 in words is "five hundred forty-two thousand, nine hundred ninety-three".