42246656 has 40 divisors (see below), whose sum is σ = 85297740. Its totient is φ = 20901888.

The previous prime is 42246643. The next prime is 42246661. The reversal of 42246656 is 65664224.

It can be written as a sum of positive squares in 2 ways, for example, as 41165056 + 1081600 = 6416^2 + 1040^2 .

It is a zygodrome in base 3.

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, 55430 + ... + 56186.

Almost surely, 2^42246656 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 42246656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42648870).

42246656 is an abundant number, since it is smaller than the sum of its proper divisors (43051084).

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

42246656 is an equidigital number, since it uses as much as digits as its factorization.

42246656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884 (or 868 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 42246656 is about 6499.7427641407. The cubic root of 42246656 is about 348.2817993149.

The spelling of 42246656 in words is "forty-two million, two hundred forty-six thousand, six hundred fifty-six".