42690860 has 24 divisors (see below), whose sum is σ = 90493200. Its totient is φ = 16915904.

The previous prime is 42690839. The next prime is 42690863. The reversal of 42690860 is 6809624.

It is a self number, because there is not a number n which added to its sum of digits gives 42690860.

It is not an unprimeable number, because it can be changed into a prime (42690863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7835 + ... + 12114.

It is an arithmetic number, because the mean of its divisors is an integer number (3770550).

Almost surely, 2^42690860 is an apocalyptic number.

It is an amenable number.

42690860 is an abundant number, since it is smaller than the sum of its proper divisors (47802340).

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

42690860 is a wasteful number, since it uses less digits than its factorization.

42690860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20065 (or 20063 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 42690860 is about 6533.8243012802. The cubic root of 42690860 is about 349.4982197381.

The spelling of 42690860 in words is "forty-two million, six hundred ninety thousand, eight hundred sixty".