42690888 has 40 divisors (see below), whose sum is σ = 119575830. Its totient is φ = 14230080.

The previous prime is 42690887. The next prime is 42690913. The reversal of 42690888 is 88809624.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 35497764 + 7193124 = 5958^2 + 2682^2 .

It is not an unprimeable number, because it can be changed into a prime (42690883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 32293 + ... + 33588.

Almost surely, 2^42690888 is an apocalyptic number.

It is an amenable number.

42690888 is an abundant number, since it is smaller than the sum of its proper divisors (76884942).

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

42690888 is a wasteful number, since it uses less digits than its factorization.

42690888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65899 (or 65886 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 42690888 is about 6533.8264439760. The cubic root of 42690888 is about 349.4982961475.

The spelling of 42690888 in words is "forty-two million, six hundred ninety thousand, eight hundred eighty-eight".