1263144 has 16 divisors (see below), whose sum is σ = 3157920. Its totient is φ = 421040.

The previous prime is 1263133. The next prime is 1263173. The reversal of 1263144 is 4413621.

Added to its reverse (4413621) it gives a triangular number (5676765 = T₃₃₆₉).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1263144.

It is a congruent number.

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, 26292 + ... + 26339.

It is an arithmetic number, because the mean of its divisors is an integer number (197370).

2^1263144 is an apocalyptic number.

It is an amenable number.

1263144 is an abundant number, since it is smaller than the sum of its proper divisors (1894776).

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

1263144 is a wasteful number, since it uses less digits than its factorization.

1263144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52640 (or 52636 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1263144 is about 1123.8967924147. The cubic root of 1263144 is about 108.0979906252.

Adding to 1263144 its reverse (4413621), we get a palindrome (5676765).

The spelling of 1263144 in words is "one million, two hundred sixty-three thousand, one hundred forty-four".