42765808 has 20 divisors (see below), whose sum is σ = 87220360. Its totient is φ = 20257344.

The previous prime is 42765803. The next prime is 42765839. The reversal of 42765808 is 80856724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42765803) 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, 70035 + ... + 70642.

It is an arithmetic number, because the mean of its divisors is an integer number (4361018).

Almost surely, 2^42765808 is an apocalyptic number.

It is an amenable number.

42765808 is an abundant number, since it is smaller than the sum of its proper divisors (44454552).

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

42765808 is a wasteful number, since it uses less digits than its factorization.

42765808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140704 (or 140698 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 42765808 is about 6539.5571715522. The cubic root of 42765808 is about 349.7026263228.

The spelling of 42765808 in words is "forty-two million, seven hundred sixty-five thousand, eight hundred eight".