5261242144 has 24 divisors (see below), whose sum is σ = 10967369868. Its totient is φ = 2475878400.

The previous prime is 5261242039. The next prime is 5261242171. The reversal of 5261242144 is 4412421625.

It can be written as a sum of positive squares in 2 ways, for example, as 4238010000 + 1023232144 = 65100^2 + 31988^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4835157 + ... + 4836244.

Almost surely, 2^5261242144 is an apocalyptic number.

It is an amenable number.

5261242144 is an abundant number, since it is smaller than the sum of its proper divisors (5706127724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5261242144 is a wasteful number, since it uses less digits than its factorization.

5261242144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9671428 (or 9671420 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 5261242144 is about 72534.4204085205. The cubic root of 5261242144 is about 1739.2530091691.

Adding to 5261242144 its reverse (4412421625), we get a palindrome (9673663769).

The spelling of 5261242144 in words is "five billion, two hundred sixty-one million, two hundred forty-two thousand, one hundred forty-four".