42212452 has 72 divisors (see below), whose sum is σ = 86026752. Its totient is φ = 18057600.

The previous prime is 42212441. The next prime is 42212459. The reversal of 42212452 is 25421224.

It is a super-2 number, since 2×42212452² = 3563782207704608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42212459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1029552 + ... + 1029592.

It is an arithmetic number, because the mean of its divisors is an integer number (1194816).

Almost surely, 2^42212452 is an apocalyptic number.

It is an amenable number.

42212452 is an abundant number, since it is smaller than the sum of its proper divisors (43814300).

42212452 is a wasteful number, since it uses less digits than its factorization.

42212452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 116 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 42212452 is about 6497.1110503054. Note that the first 3 decimals coincide. The cubic root of 42212452 is about 348.1877812460.

Adding to 42212452 its reverse (25421224), we get a palindrome (67633676).

The spelling of 42212452 in words is "forty-two million, two hundred twelve thousand, four hundred fifty-two".