42785556 has 48 divisors (see below), whose sum is σ = 112674240. Its totient is φ = 12517120.

The previous prime is 42785551. The next prime is 42785569. The reversal of 42785556 is 65558724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42785551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1761 + ... + 9416.

It is an arithmetic number, because the mean of its divisors is an integer number (2347380).

Almost surely, 2^42785556 is an apocalyptic number.

It is an amenable number.

42785556 is an abundant number, since it is smaller than the sum of its proper divisors (69888684).

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

42785556 is a wasteful number, since it uses less digits than its factorization.

42785556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11224 (or 11222 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The square root of 42785556 is about 6541.0668854553. The cubic root of 42785556 is about 349.7564455231.

The spelling of 42785556 in words is "forty-two million, seven hundred eighty-five thousand, five hundred fifty-six".