542121604 has 24 divisors (see below), whose sum is σ = 1005953760. Its totient is φ = 254915136.

The previous prime is 542121553. The next prime is 542121611. The reversal of 542121604 is 406121245.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15622 + ... + 36445.

It is an arithmetic number, because the mean of its divisors is an integer number (41914740).

Almost surely, 2^542121604 is an apocalyptic number.

It is an amenable number.

542121604 is a deficient number, since it is larger than the sum of its proper divisors (463832156).

542121604 is a wasteful number, since it uses less digits than its factorization.

542121604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52227 (or 52225 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 542121604 is about 23283.5049766997. The cubic root of 542121604 is about 815.3903578723.

Adding to 542121604 its reverse (406121245), we get a palindrome (948242849).

The spelling of 542121604 in words is "five hundred forty-two million, one hundred twenty-one thousand, six hundred four".