42751252 has 6 divisors (see below), whose sum is σ = 74814698. Its totient is φ = 21375624.

The previous prime is 42751213. The next prime is 42751253. The reversal of 42751252 is 25215724.

It can be written as a sum of positive squares in only one way, i.e., 41396356 + 1354896 = 6434^2 + 1164^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42751252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42751253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5343903 + ... + 5343910.

Almost surely, 2^42751252 is an apocalyptic number.

It is an amenable number.

42751252 is a deficient number, since it is larger than the sum of its proper divisors (32063446).

42751252 is a wasteful number, since it uses less digits than its factorization.

42751252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10687817 (or 10687815 counting only the distinct ones).

The product of its digits is 5600, while the sum is 28.

The square root of 42751252 is about 6538.4441574430. Note that the first 3 decimals coincide. The cubic root of 42751252 is about 349.6629462662.

Adding to 42751252 its reverse (25215724), we get a palindrome (67966976).

The spelling of 42751252 in words is "forty-two million, seven hundred fifty-one thousand, two hundred fifty-two".