540542439 has 12 divisors (see below), whose sum is σ = 780988000. Its totient is φ = 360267264.

The previous prime is 540542423. The next prime is 540542449. The reversal of 540542439 is 934245045.

It is a happy number.

540542439 is a `hidden beast` number, since 5 + 405 + 4 + 243 + 9 = 666.

It is not a de Polignac number, because 540542439 - 2⁴ = 540542423 is a prime.

It is a super-2 number, since 2×540542439² = 584372256720137442, which 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 (540542449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54162 + ... + 63360.

Almost surely, 2^540542439 is an apocalyptic number.

540542439 is a deficient number, since it is larger than the sum of its proper divisors (240445561).

540542439 is a wasteful number, since it uses less digits than its factorization.

540542439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15734 (or 15731 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 540542439 is about 23249.5685766424. The cubic root of 540542439 is about 814.5978615032.

The spelling of 540542439 in words is "five hundred forty million, five hundred forty-two thousand, four hundred thirty-nine".