637142442 has 32 divisors (see below), whose sum is σ = 1350956544. Its totient is φ = 199972800.

The previous prime is 637142423. The next prime is 637142449. The reversal of 637142442 is 244241736.

637142442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (637142449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39409 + ... + 53172.

It is an arithmetic number, because the mean of its divisors is an integer number (42217392).

Almost surely, 2^637142442 is an apocalyptic number.

637142442 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

637142442 is an abundant number, since it is smaller than the sum of its proper divisors (713814102).

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

637142442 is a wasteful number, since it uses less digits than its factorization.

637142442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92654.

The product of its digits is 32256, while the sum is 33.

The square root of 637142442 is about 25241.6806492753. The cubic root of 637142442 is about 860.4893744391.

The spelling of 637142442 in words is "six hundred thirty-seven million, one hundred forty-two thousand, four hundred forty-two".