42479856 has 80 divisors (see below), whose sum is σ = 123206400. Its totient is φ = 14012352.

The previous prime is 42479831. The next prime is 42479863. The reversal of 42479856 is 65897424.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45765 + ... + 46683.

It is an arithmetic number, because the mean of its divisors is an integer number (1540080).

Almost surely, 2^42479856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42479856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61603200).

42479856 is an abundant number, since it is smaller than the sum of its proper divisors (80726544).

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

42479856 is a wasteful number, since it uses less digits than its factorization.

42479856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 1031 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 42479856 is about 6517.6572478154. The cubic root of 42479856 is about 348.9214580661.

The spelling of 42479856 in words is "forty-two million, four hundred seventy-nine thousand, eight hundred fifty-six".