42421344 has 48 divisors (see below), whose sum is σ = 127266048. Its totient is φ = 12120192.

The previous prime is 42421321. The next prime is 42421363. The reversal of 42421344 is 44312424.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30892 + ... + 32235.

It is an arithmetic number, because the mean of its divisors is an integer number (2651376).

Almost surely, 2^42421344 is an apocalyptic number.

It is an amenable number.

42421344 is an abundant number, since it is smaller than the sum of its proper divisors (84844704).

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

42421344 is a wasteful number, since it uses less digits than its factorization.

42421344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63147 (or 63139 counting only the distinct ones).

The product of its digits is 3072, while the sum is 24.

The square root of 42421344 is about 6513.1669716045. The cubic root of 42421344 is about 348.7611823087.

Adding to 42421344 its reverse (44312424), we get a palindrome (86733768).

The spelling of 42421344 in words is "forty-two million, four hundred twenty-one thousand, three hundred forty-four".