42570836 has 48 divisors (see below), whose sum is σ = 93985920. Its totient is φ = 16389120.

The previous prime is 42570799. The next prime is 42570883. The reversal of 42570836 is 63807524.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42570796 and 42570805.

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, 26636 + ... + 28188.

It is an arithmetic number, because the mean of its divisors is an integer number (1958040).

Almost surely, 2^42570836 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 42570836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46992960).

42570836 is an abundant number, since it is smaller than the sum of its proper divisors (51415084).

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

42570836 is a wasteful number, since it uses less digits than its factorization.

42570836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 42570836 is about 6524.6330164999. The cubic root of 42570836 is about 349.1703779172.

The spelling of 42570836 in words is "forty-two million, five hundred seventy thousand, eight hundred thirty-six".