542369 has 4 divisors (see below), whose sum is σ = 550080. Its totient is φ = 534660.

The previous prime is 542323. The next prime is 542371. The reversal of 542369 is 963245.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542369 is a prime.

It is a super-2 number, since 2×542369² = 588328264322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5⁵ + 4² + 3¹² + 2 + 6⁵ + 9 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3749 + ... + 3890.

It is an arithmetic number, because the mean of its divisors is an integer number (137520).

2⁵⁴²³⁶⁹ is an apocalyptic number.

It is an amenable number.

542369 is a deficient number, since it is larger than the sum of its proper divisors (7711).

542369 is an equidigital number, since it uses as much as digits as its factorization.

542369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7710.

The product of its digits is 6480, while the sum is 29.

The square root of 542369 is about 736.4570591691. The cubic root of 542369 is about 81.5514372874.

It can be divided in two parts, 54236 and 9, that added together give a palindrome (54245).

The spelling of 542369 in words is "five hundred forty-two thousand, three hundred sixty-nine".