42638630 has 8 divisors (see below), whose sum is σ = 76749552. Its totient is φ = 17055448.

The previous prime is 42638627. The next prime is 42638633. The reversal of 42638630 is 3683624.

It is an interprime number because it is at equal distance from previous prime (42638627) and next prime (42638633).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42638633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2131922 + ... + 2131941.

It is an arithmetic number, because the mean of its divisors is an integer number (9593694).

Almost surely, 2^42638630 is an apocalyptic number.

42638630 is a deficient number, since it is larger than the sum of its proper divisors (34110922).

42638630 is a wasteful number, since it uses less digits than its factorization.

42638630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263870.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 42638630 is about 6529.8261845167. The cubic root of 42638630 is about 349.3556307353.

The spelling of 42638630 in words is "forty-two million, six hundred thirty-eight thousand, six hundred thirty".