1260144 has 40 divisors (see below), whose sum is σ = 3618320. Its totient is φ = 419904.

The previous prime is 1260143. The next prime is 1260157. The reversal of 1260144 is 4410621.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027 + ... + 1890.

It is an arithmetic number, because the mean of its divisors is an integer number (90458).

2^1260144 is an apocalyptic number.

It is an amenable number.

1260144 is an abundant number, since it is smaller than the sum of its proper divisors (2358176).

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

1260144 is a wasteful number, since it uses less digits than its factorization.

1260144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934 (or 2922 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1260144 is about 1122.5613568977. The cubic root of 1260144 is about 108.0123442680.

Adding to 1260144 its reverse (4410621), we get a palindrome (5670765).

The spelling of 1260144 in words is "one million, two hundred sixty thousand, one hundred forty-four".