42644412 has 36 divisors (see below), whose sum is σ = 108064320. Its totient is φ = 14179392.

The previous prime is 42644411. The next prime is 42644431. The reversal of 42644412 is 21444624.

It is a happy number.

42644412 is a `hidden beast` number, since 4 + 2 + 644 + 4 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42644411) 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, 16008 + ... + 18480.

Almost surely, 2^42644412 is an apocalyptic number.

It is an amenable number.

42644412 is an abundant number, since it is smaller than the sum of its proper divisors (65419908).

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

42644412 is a wasteful number, since it uses less digits than its factorization.

42644412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962 (or 2957 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 42644412 is about 6530.2689071737. The cubic root of 42644412 is about 349.3714214471.

The spelling of 42644412 in words is "forty-two million, six hundred forty-four thousand, four hundred twelve".