1265404 has 24 divisors (see below), whose sum is σ = 2592128. Its totient is φ = 529200.

The previous prime is 1265393. The next prime is 1265431. The reversal of 1265404 is 4045621.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 679 + ... + 1729.

2^1265404 is an apocalyptic number.

1265404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1265404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1296064).

1265404 is an abundant number, since it is smaller than the sum of its proper divisors (1326724).

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

1265404 is a wasteful number, since it uses less digits than its factorization.

1265404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1265404 is about 1124.9017734896. The cubic root of 1265404 is about 108.1624213640.

The spelling of 1265404 in words is "one million, two hundred sixty-five thousand, four hundred four".