542440645 has 8 divisors (see below), whose sum is σ = 651495456. Its totient is φ = 433574736.

The previous prime is 542440603. The next prime is 542440651. The reversal of 542440645 is 546044245.

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 542440645 - 2²¹ = 540343493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542440645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40827 + ... + 52456.

It is an arithmetic number, because the mean of its divisors is an integer number (81436932).

Almost surely, 2^542440645 is an apocalyptic number.

It is an amenable number.

542440645 is a deficient number, since it is larger than the sum of its proper divisors (109054811).

542440645 is a wasteful number, since it uses less digits than its factorization.

542440645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94451.

The product of its (nonzero) digits is 76800, while the sum is 34.

The square root of 542440645 is about 23290.3551926543. The cubic root of 542440645 is about 815.5502801346.

The spelling of 542440645 in words is "five hundred forty-two million, four hundred forty thousand, six hundred forty-five".