42212512 has 24 divisors (see below), whose sum is σ = 83251476. Its totient is φ = 21069312.

The previous prime is 42212501. The next prime is 42212531. The reversal of 42212512 is 21521224.

It can be written as a sum of positive squares in 2 ways, for example, as 36433296 + 5779216 = 6036^2 + 2404^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42212512.

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, 32418 + ... + 33694.

Almost surely, 2^42212512 is an apocalyptic number.

It is an amenable number.

42212512 is a deficient number, since it is larger than the sum of its proper divisors (41038964).

42212512 is a wasteful number, since it uses less digits than its factorization.

42212512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320 (or 2312 counting only the distinct ones).

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

The square root of 42212512 is about 6497.1156677406. The cubic root of 42212512 is about 348.1879462152.

Adding to 42212512 its reverse (21521224), we get a palindrome (63733736).

It can be divided in two parts, 42212 and 512, that added together give a palindrome (42724).

The spelling of 42212512 in words is "forty-two million, two hundred twelve thousand, five hundred twelve".