542561320 has 48 divisors (see below), whose sum is σ = 1420076340. Its totient is φ = 186020352.

The previous prime is 542561317. The next prime is 542561363. The reversal of 542561320 is 23165245.

It can be written as a sum of positive squares in 2 ways, for example, as 542051524 + 509796 = 23282^2 + 714^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136449 + ... + 140368.

Almost surely, 2^542561320 is an apocalyptic number.

It is an amenable number.

542561320 is an abundant number, since it is smaller than the sum of its proper divisors (877515020).

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

542561320 is a wasteful number, since it uses less digits than its factorization.

542561320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276842 (or 276831 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 542561320 is about 23292.9457132412. The cubic root of 542561320 is about 815.6107532535.

The spelling of 542561320 in words is "five hundred forty-two million, five hundred sixty-one thousand, three hundred twenty".