42645996 has 54 divisors (see below), whose sum is σ = 114541700. Its totient is φ = 13375872.

The previous prime is 42645989. The next prime is 42646001. The reversal of 42645996 is 69954624.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8355 + ... + 12453.

Almost surely, 2^42645996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42645996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57270850).

42645996 is an abundant number, since it is smaller than the sum of its proper divisors (71895704).

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

42645996 is a wasteful number, since it uses less digits than its factorization.

42645996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143 (or 4121 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 42645996 is about 6530.3901874237. The cubic root of 42645996 is about 349.3757471212.

The spelling of 42645996 in words is "forty-two million, six hundred forty-five thousand, nine hundred ninety-six".