42779996 has 12 divisors (see below), whose sum is σ = 85560048. Its totient is φ = 18334272.

The previous prime is 42779941. The next prime is 42780013. The reversal of 42779996 is 69997724.

It is a happy number.

42779996 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763901 + ... + 763956.

It is an arithmetic number, because the mean of its divisors is an integer number (7130004).

Almost surely, 2^42779996 is an apocalyptic number.

It is an amenable number.

42779996 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42779996 is a wasteful number, since it uses less digits than its factorization.

42779996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527868 (or 1527866 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 53.

The square root of 42779996 is about 6540.6418645268. The cubic root of 42779996 is about 349.7412945371.

The spelling of 42779996 in words is "forty-two million, seven hundred seventy-nine thousand, nine hundred ninety-six".