1260144172 has 72 divisors (see below), whose sum is σ = 2666928768. Its totient is φ = 518918400.

The previous prime is 1260144167. The next prime is 1260144173. The reversal of 1260144172 is 2714410621.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1260144172.

It is not an unprimeable number, because it can be changed into a prime (1260144173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 953272 + ... + 954592.

Almost surely, 2^1260144172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1260144172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1333464384).

1260144172 is an abundant number, since it is smaller than the sum of its proper divisors (1406784596).

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

1260144172 is a wasteful number, since it uses less digits than its factorization.

1260144172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1260144172 is about 35498.5094334959. The cubic root of 1260144172 is about 1080.1234918231.

Adding to 1260144172 its reverse (2714410621), we get a palindrome (3974554793).

The spelling of 1260144172 in words is "one billion, two hundred sixty million, one hundred forty-four thousand, one hundred seventy-two".