642299476 has 24 divisors (see below), whose sum is σ = 1383415040. Its totient is φ = 254096352.

The previous prime is 642299443. The next prime is 642299477. The reversal of 642299476 is 674992246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642299477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 881916 + ... + 882643.

Almost surely, 2^642299476 is an apocalyptic number.

It is an amenable number.

642299476 is an abundant number, since it is smaller than the sum of its proper divisors (741115564).

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

642299476 is a wasteful number, since it uses less digits than its factorization.

642299476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764583 (or 1764581 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The square root of 642299476 is about 25343.6279170919. The cubic root of 642299476 is about 862.8047404849.

The spelling of 642299476 in words is "six hundred forty-two million, two hundred ninety-nine thousand, four hundred seventy-six".