42643500 has 48 divisors (see below), whose sum is σ = 124182240. Its totient is φ = 11371200.

The previous prime is 42643483. The next prime is 42643501. The reversal of 42643500 is 534624.

It is not an unprimeable number, because it can be changed into a prime (42643501) 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, 12715 + ... + 15714.

It is an arithmetic number, because the mean of its divisors is an integer number (2587130).

Almost surely, 2^42643500 is an apocalyptic number.

It is an amenable number.

42643500 is an abundant number, since it is smaller than the sum of its proper divisors (81538740).

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

42643500 is a wasteful number, since it uses less digits than its factorization.

42643500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28451 (or 28439 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 42643500 is about 6530.1990781292. The cubic root of 42643500 is about 349.3689308589.

The spelling of 42643500 in words is "forty-two million, six hundred forty-three thousand, five hundred".