1261269 has 12 divisors (see below), whose sum is σ = 1831596. Its totient is φ = 836352.

The previous prime is 1261261. The next prime is 1261279. The reversal of 1261269 is 9621621.

It can be written as a sum of positive squares in 2 ways, for example, as 680625 + 580644 = 825^2 + 762^2 .

It is not a de Polignac number, because 1261269 - 2³ = 1261261 is a prime.

It is a super-2 number, since 2×1261269² = 3181598980722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261261) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2979 + ... + 3375.

It is an arithmetic number, because the mean of its divisors is an integer number (152633).

2^1261269 is an apocalyptic number.

It is an amenable number.

1261269 is a deficient number, since it is larger than the sum of its proper divisors (570327).

1261269 is a wasteful number, since it uses less digits than its factorization.

1261269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756 (or 753 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1261269 is about 1123.0623313067. The cubic root of 1261269 is about 108.0444775651.

The spelling of 1261269 in words is "one million, two hundred sixty-one thousand, two hundred sixty-nine".