42303444 has 24 divisors (see below), whose sum is σ = 99230208. Its totient is φ = 14026560.

The previous prime is 42303421. The next prime is 42303449. The reversal of 42303444 is 44430324.

It is a happy number.

It is a super-2 number, since 2×42303444² = 3579162748522272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42303449) 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, 6937 + ... + 11520.

It is an arithmetic number, because the mean of its divisors is an integer number (4134592).

Almost surely, 2^42303444 is an apocalyptic number.

It is an amenable number.

42303444 is an abundant number, since it is smaller than the sum of its proper divisors (56926764).

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

42303444 is a wasteful number, since it uses less digits than its factorization.

42303444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18655 (or 18653 counting only the distinct ones).

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

The square root of 42303444 is about 6504.1097776713. The cubic root of 42303444 is about 348.4377830331.

Adding to 42303444 its reverse (44430324), we get a palindrome (86733768).

The spelling of 42303444 in words is "forty-two million, three hundred three thousand, four hundred forty-four".