542637860 has 24 divisors (see below), whose sum is σ = 1139992056. Its totient is φ = 216968960.

The previous prime is 542637839. The next prime is 542637863. The reversal of 542637860 is 68736245.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 207821056 + 334816804 = 14416^2 + 18298^2 .

It is not an unprimeable number, because it can be changed into a prime (542637863) 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, 76880 + ... + 83640.

It is an arithmetic number, because the mean of its divisors is an integer number (47499669).

Almost surely, 2^542637860 is an apocalyptic number.

It is an amenable number.

542637860 is an abundant number, since it is smaller than the sum of its proper divisors (597354196).

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

542637860 is a wasteful number, since it uses less digits than its factorization.

542637860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10783 (or 10781 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 542637860 is about 23294.5886420001. The cubic root of 542637860 is about 815.6491046247.

The spelling of 542637860 in words is "five hundred forty-two million, six hundred thirty-seven thousand, eight hundred sixty".