1265944 has 8 divisors (see below), whose sum is σ = 2373660. Its totient is φ = 632968.

The previous prime is 1265941. The next prime is 1265959. The reversal of 1265944 is 4495621.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1265944² = 3205228422272, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79114 + ... + 79129.

2^1265944 is an apocalyptic number.

It is an amenable number.

1265944 is a deficient number, since it is larger than the sum of its proper divisors (1107716).

1265944 is a wasteful number, since it uses less digits than its factorization.

1265944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158249 (or 158245 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 1265944 is about 1125.1417688452. The cubic root of 1265944 is about 108.1778049625.

It can be divided in two parts, 1265 and 944, that added together give a square (2209 = 47²).

The spelling of 1265944 in words is "one million, two hundred sixty-five thousand, nine hundred forty-four".