42243312 has 20 divisors (see below), whose sum is σ = 109128680. Its totient is φ = 14081088.

The previous prime is 42243281. The next prime is 42243337. The reversal of 42243312 is 21334224.

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 3 ways as a sum of consecutive naturals, for example, 439987 + ... + 440082.

It is an arithmetic number, because the mean of its divisors is an integer number (5456434).

Almost surely, 2^42243312 is an apocalyptic number.

It is an amenable number.

42243312 is an abundant number, since it is smaller than the sum of its proper divisors (66885368).

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

42243312 is a wasteful number, since it uses less digits than its factorization.

42243312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880080 (or 880074 counting only the distinct ones).

The product of its digits is 1152, while the sum is 21.

The square root of 42243312 is about 6499.4855181006. The cubic root of 42243312 is about 348.2726097507.

Adding to 42243312 its reverse (21334224), we get a palindrome (63577536).

It can be divided in two parts, 422 and 43312, that added together give a palindrome (43734).

The spelling of 42243312 in words is "forty-two million, two hundred forty-three thousand, three hundred twelve".