42243251125 has 16 divisors (see below), whose sum is σ = 55820731824. Its totient is φ = 31806681600.

The previous prime is 42243251107. The next prime is 42243251173. The reversal of 42243251125 is 52115234224.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 23379327409 + 18863923716 = 152903^2 + 137346^2 .

It is not a de Polignac number, because 42243251125 - 2²³ = 42234862517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9937464 + ... + 9941713.

It is an arithmetic number, because the mean of its divisors is an integer number (3488795739).

Almost surely, 2^42243251125 is an apocalyptic number.

It is an amenable number.

42243251125 is a deficient number, since it is larger than the sum of its proper divisors (13577480699).

42243251125 is a wasteful number, since it uses less digits than its factorization.

42243251125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19879209 (or 19879199 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

Adding to 42243251125 its reverse (52115234224), we get a palindrome (94358485349).

The spelling of 42243251125 in words is "forty-two billion, two hundred forty-three million, two hundred fifty-one thousand, one hundred twenty-five".