42645384 has 48 divisors (see below), whose sum is σ = 122295420. Its totient is φ = 13378560.

The previous prime is 42645353. The next prime is 42645389. The reversal of 42645384 is 48354624.

42645384 is a `hidden beast` number, since 4 + 2 + 645 + 3 + 8 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 42536484 + 108900 = 6522^2 + 330^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (42645389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16197 + ... + 18644.

Almost surely, 2^42645384 is an apocalyptic number.

It is an amenable number.

42645384 is an abundant number, since it is smaller than the sum of its proper divisors (79650036).

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

42645384 is a wasteful number, since it uses less digits than its factorization.

42645384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34870 (or 34863 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 42645384 is about 6530.3433294123. The cubic root of 42645384 is about 349.3740758507.

The spelling of 42645384 in words is "forty-two million, six hundred forty-five thousand, three hundred eighty-four".