540642172 has 24 divisors (see below), whose sum is σ = 1090859616. Its totient is φ = 229651968.

The previous prime is 540642121. The next prime is 540642173. The reversal of 540642172 is 271246045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540642173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82273 + ... + 88600.

It is an arithmetic number, because the mean of its divisors is an integer number (45452484).

Almost surely, 2^540642172 is an apocalyptic number.

It is an amenable number.

540642172 is an abundant number, since it is smaller than the sum of its proper divisors (550217444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

540642172 is a wasteful number, since it uses less digits than its factorization.

540642172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170997 (or 170995 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 540642172 is about 23251.7133132163. The cubic root of 540642172 is about 814.6479576577.

The spelling of 540642172 in words is "five hundred forty million, six hundred forty-two thousand, one hundred seventy-two".