42779892 has 24 divisors (see below), whose sum is σ = 102255552. Its totient is φ = 13912000.

The previous prime is 42779861. The next prime is 42779903. The reversal of 42779892 is 29897724.

It is a congruent number.

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, 42984 + ... + 43967.

It is an arithmetic number, because the mean of its divisors is an integer number (4260648).

Almost surely, 2^42779892 is an apocalyptic number.

It is an amenable number.

42779892 is an abundant number, since it is smaller than the sum of its proper divisors (59475660).

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

42779892 is a wasteful number, since it uses less digits than its factorization.

42779892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86999 (or 86997 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 42779892 is about 6540.6339142319. The cubic root of 42779892 is about 349.7410111248.

The spelling of 42779892 in words is "forty-two million, seven hundred seventy-nine thousand, eight hundred ninety-two".