542521320 has 64 divisors (see below), whose sum is σ = 1775528640. Its totient is φ = 131520000.

The previous prime is 542521277. The next prime is 542521333. The reversal of 542521320 is 23125245.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204181 + ... + 206820.

It is an arithmetic number, because the mean of its divisors is an integer number (27742635).

Almost surely, 2^542521320 is an apocalyptic number.

It is an amenable number.

542521320 is an abundant number, since it is smaller than the sum of its proper divisors (1233007320).

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

542521320 is a wasteful number, since it uses less digits than its factorization.

542521320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411026 (or 411022 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 542521320 is about 23292.0870683586. The cubic root of 542521320 is about 815.5907092937.

Adding to 542521320 its reverse (23125245), we get a palindrome (565646565).

The spelling of 542521320 in words is "five hundred forty-two million, five hundred twenty-one thousand, three hundred twenty".