42690624 has 28 divisors (see below), whose sum is σ = 112952784. Its totient is φ = 14230144.

The previous prime is 42690589. The next prime is 42690629. The reversal of 42690624 is 42609624.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42690629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110982 + ... + 111365.

It is an arithmetic number, because the mean of its divisors is an integer number (4034028).

Almost surely, 2^42690624 is an apocalyptic number.

It is an amenable number.

42690624 is an abundant number, since it is smaller than the sum of its proper divisors (70262160).

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

42690624 is a wasteful number, since it uses less digits than its factorization.

42690624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222362 (or 222352 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 42690624 is about 6533.8062413879. The cubic root of 42690624 is about 349.4975757147.

The spelling of 42690624 in words is "forty-two million, six hundred ninety thousand, six hundred twenty-four".