42868944 has 120 divisors (see below), whose sum is σ = 126132552. Its totient is φ = 13578240.

The previous prime is 42868907. The next prime is 42868961. The reversal of 42868944 is 44986824.

It can be written as a sum of positive squares in 4 ways, for example, as 3027600 + 39841344 = 1740^2 + 6312^2 .

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 42868944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 312844 + ... + 312980.

Almost surely, 2^42868944 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 42868944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63066276).

42868944 is an abundant number, since it is smaller than the sum of its proper divisors (83263608).

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

42868944 is a wasteful number, since it uses less digits than its factorization.

42868944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 236 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 42868944 is about 6547.4379722148. The cubic root of 42868944 is about 349.9835203125.

The spelling of 42868944 in words is "forty-two million, eight hundred sixty-eight thousand, nine hundred forty-four".