1265043 has 16 divisors (see below), whose sum is σ = 1836800. Its totient is φ = 769824.

The previous prime is 1265041. The next prime is 1265051. The reversal of 1265043 is 3405621.

It is a happy number.

It is not a de Polignac number, because 1265043 - 2¹ = 1265041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1265041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6258 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (114800).

2^1265043 is an apocalyptic number.

1265043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1265043 is a deficient number, since it is larger than the sum of its proper divisors (571757).

1265043 is a wasteful number, since it uses less digits than its factorization.

1265043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1265043 is about 1124.7413035894. The cubic root of 1265043 is about 108.1521347025.

The spelling of 1265043 in words is "one million, two hundred sixty-five thousand, forty-three".