542331240439 has 4 divisors (see below), whose sum is σ = 543762193960. Its totient is φ = 540900286920.

The previous prime is 542331240401. The next prime is 542331240449. The reversal of 542331240439 is 934042133245.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542331240439 is a prime.

It is a super-2 number, since 2×542331240439² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542331240449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715476192 + ... + 715476949.

It is an arithmetic number, because the mean of its divisors is an integer number (135940548490).

Almost surely, 2^542331240439 is an apocalyptic number.

542331240439 is a deficient number, since it is larger than the sum of its proper divisors (1430953521).

542331240439 is a wasteful number, since it uses less digits than its factorization.

542331240439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430953520.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 542331240439 in words is "five hundred forty-two billion, three hundred thirty-one million, two hundred forty thousand, four hundred thirty-nine".