42221512 has 16 divisors (see below), whose sum is σ = 79257600. Its totient is φ = 21086160.

The previous prime is 42221467. The next prime is 42221527. The reversal of 42221512 is 21512224.

It is a super-2 number, since 2×42221512² = 3565312151132288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42221512.

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, 5689 + ... + 10807.

It is an arithmetic number, because the mean of its divisors is an integer number (4953600).

Almost surely, 2^42221512 is an apocalyptic number.

It is an amenable number.

42221512 is a deficient number, since it is larger than the sum of its proper divisors (37036088).

42221512 is a wasteful number, since it uses less digits than its factorization.

42221512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156 (or 6152 counting only the distinct ones).

The product of its digits is 320, while the sum is 19.

The square root of 42221512 is about 6497.8082458626. The cubic root of 42221512 is about 348.2126898176.

Adding to 42221512 its reverse (21512224), we get a palindrome (63733736).

The spelling of 42221512 in words is "forty-two million, two hundred twenty-one thousand, five hundred twelve".