642045548 has 6 divisors (see below), whose sum is σ = 1123579716. Its totient is φ = 321022772.

The previous prime is 642045539. The next prime is 642045559. The reversal of 642045548 is 845540246.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80255690 + ... + 80255697.

It is an arithmetic number, because the mean of its divisors is an integer number (187263286).

Almost surely, 2^642045548 is an apocalyptic number.

It is an amenable number.

642045548 is a deficient number, since it is larger than the sum of its proper divisors (481534168).

642045548 is a wasteful number, since it uses less digits than its factorization.

642045548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160511391 (or 160511389 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 38.

The square root of 642045548 is about 25338.6177207834. The cubic root of 642045548 is about 862.6910244959.

The spelling of 642045548 in words is "six hundred forty-two million, forty-five thousand, five hundred forty-eight".