42661612 has 24 divisors (see below), whose sum is σ = 89815040. Its totient is φ = 17321040.

The previous prime is 42661609. The next prime is 42661621. The reversal of 42661612 is 21616624.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39564 + ... + 40627.

Almost surely, 2^42661612 is an apocalyptic number.

It is an amenable number.

42661612 is an abundant number, since it is smaller than the sum of its proper divisors (47153428).

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

42661612 is a wasteful number, since it uses less digits than its factorization.

42661612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80221 (or 80219 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 42661612 is about 6531.5857186444. The cubic root of 42661612 is about 349.4183864181.

The spelling of 42661612 in words is "forty-two million, six hundred sixty-one thousand, six hundred twelve".