637042 has 8 divisors (see below), whose sum is σ = 1092096. Its totient is φ = 273012.

The previous prime is 637003. The next prime is 637067. The reversal of 637042 is 240736.

637042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

637042 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22738 + ... + 22765.

It is an arithmetic number, because the mean of its divisors is an integer number (136512).

2⁶³⁷⁰⁴² is an apocalyptic number.

637042 is a deficient number, since it is larger than the sum of its proper divisors (455054).

637042 is a wasteful number, since it uses less digits than its factorization.

637042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45512.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 637042 is about 798.1491088763. The cubic root of 637042 is about 86.0444154925.

Adding to 637042 its reverse (240736), we get a palindrome (877778).

The spelling of 637042 in words is "six hundred thirty-seven thousand, forty-two".