42289344 has 56 divisors (see below), whose sum is σ = 124327920. Its totient is φ = 14095872.

The previous prime is 42289343. The next prime is 42289361. The reversal of 42289344 is 44398224.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 42289299 and 42289308.

It is not an unprimeable number, because it can be changed into a prime (42289343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10509 + ... + 13964.

Almost surely, 2^42289344 is an apocalyptic number.

It is an amenable number.

42289344 is an abundant number, since it is smaller than the sum of its proper divisors (82038576).

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

42289344 is a wasteful number, since it uses less digits than its factorization.

42289344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24494 (or 24478 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 42289344 is about 6503.0257572918. The cubic root of 42289344 is about 348.3990665740.

The spelling of 42289344 in words is "forty-two million, two hundred eighty-nine thousand, three hundred forty-four".