634044042 has 24 divisors (see below), whose sum is σ = 1375491780. Its totient is φ = 211081920.

The previous prime is 634044011. The next prime is 634044043. The reversal of 634044042 is 240440436.

It can be written as a sum of positive squares in 2 ways, for example, as 633982041 + 62001 = 25179^2 + 249^2 .

It is a junction number, because it is equal to n+sod(n) for n = 634043997 and 634044015.

It is not an unprimeable number, because it can be changed into a prime (634044043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7209 + ... + 36332.

Almost surely, 2^634044042 is an apocalyptic number.

634044042 is an abundant number, since it is smaller than the sum of its proper divisors (741447738).

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

634044042 is a wasteful number, since it uses less digits than its factorization.

634044042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44358 (or 44355 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 634044042 is about 25180.2311744749. The cubic root of 634044042 is about 859.0922646794.

Adding to 634044042 its reverse (240440436), we get a palindrome (874484478).

The spelling of 634044042 in words is "six hundred thirty-four million, forty-four thousand, forty-two".