42403344 has 40 divisors (see below), whose sum is σ = 109864992. Its totient is φ = 14092800.

The previous prime is 42403343. The next prime is 42403379. The reversal of 42403344 is 44330424.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (42403343) 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, 18147 + ... + 20349.

Almost surely, 2^42403344 is an apocalyptic number.

It is an amenable number.

42403344 is an abundant number, since it is smaller than the sum of its proper divisors (67461648).

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

42403344 is a wasteful number, since it uses less digits than its factorization.

42403344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615 (or 2609 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 42403344 is about 6511.7850087361. The cubic root of 42403344 is about 348.7118471643.

Adding to 42403344 its reverse (44330424), we get a palindrome (86733768).

The spelling of 42403344 in words is "forty-two million, four hundred three thousand, three hundred forty-four".