42251212252 has 24 divisors (see below), whose sum is σ = 77172156432. Its totient is φ = 20221468800.

The previous prime is 42251212249. The next prime is 42251212307. The reversal of 42251212252 is 25221215224.

It is a self number, because there is not a number n which added to its sum of digits gives 42251212252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2421774 + ... + 2439157.

It is an arithmetic number, because the mean of its divisors is an integer number (3215506518).

Almost surely, 2^42251212252 is an apocalyptic number.

It is an amenable number.

42251212252 is a deficient number, since it is larger than the sum of its proper divisors (34920944180).

42251212252 is a wasteful number, since it uses less digits than its factorization.

42251212252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4861029 (or 4861027 counting only the distinct ones).

The product of its digits is 6400, while the sum is 28.

Adding to 42251212252 its reverse (25221215224), we get a palindrome (67472427476).

The spelling of 42251212252 in words is "forty-two billion, two hundred fifty-one million, two hundred twelve thousand, two hundred fifty-two".