42321224 has 32 divisors (see below), whose sum is σ = 86819040. Its totient is φ = 19180800.

The previous prime is 42321203. The next prime is 42321241. The reversal of 42321224 is 42212324.

It is a junction number, because it is equal to n+sod(n) for n = 42321196 and 42321205.

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, 51779 + ... + 52589.

It is an arithmetic number, because the mean of its divisors is an integer number (2713095).

Almost surely, 2^42321224 is an apocalyptic number.

42321224 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42321224 is an abundant number, since it is smaller than the sum of its proper divisors (44497816).

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

42321224 is a wasteful number, since it uses less digits than its factorization.

42321224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1417 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 42321224 is about 6505.4764621817. The cubic root of 42321224 is about 348.4865919516.

Adding to 42321224 its reverse (42212324), we get a palindrome (84533548).

Subtracting from 42321224 its reverse (42212324), we obtain a square (108900 = 330²).

The spelling of 42321224 in words is "forty-two million, three hundred twenty-one thousand, two hundred twenty-four".