42251312 has 10 divisors (see below), whose sum is σ = 81861948. Its totient is φ = 21125648.

The previous prime is 42251311. The next prime is 42251317. The reversal of 42251312 is 21315224.

It is not an unprimeable number, because it can be changed into a prime (42251311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320338 + ... + 1320369.

Almost surely, 2^42251312 is an apocalyptic number.

It is an amenable number.

42251312 is a deficient number, since it is larger than the sum of its proper divisors (39610636).

42251312 is a wasteful number, since it uses less digits than its factorization.

42251312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640715 (or 2640709 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 42251312 is about 6500.1009222934. The cubic root of 42251312 is about 348.2945935464.

Adding to 42251312 its reverse (21315224), we get a palindrome (63566536).

The spelling of 42251312 in words is "forty-two million, two hundred fifty-one thousand, three hundred twelve".