42644630 has 16 divisors (see below), whose sum is σ = 87726240. Its totient is φ = 14620992.

The previous prime is 42644627. The next prime is 42644639. The reversal of 42644630 is 3644624.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42644593 and 42644602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42644639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304535 + ... + 304674.

It is an arithmetic number, because the mean of its divisors is an integer number (5482890).

Almost surely, 2^42644630 is an apocalyptic number.

42644630 is an abundant number, since it is smaller than the sum of its proper divisors (45081610).

42644630 is a wasteful number, since it uses less digits than its factorization.

42644630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609223.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 42644630 is about 6530.2855986549. The cubic root of 42644630 is about 349.3720167798.

The spelling of 42644630 in words is "forty-two million, six hundred forty-four thousand, six hundred thirty".