1261413 has 24 divisors (see below), whose sum is σ = 1965600. Its totient is φ = 807408.

The previous prime is 1261411. The next prime is 1261427. The reversal of 1261413 is 3141621.

It is a happy number.

It is not a de Polignac number, because 1261413 - 2¹ = 1261411 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261411) 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 23 ways as a sum of consecutive naturals, for example, 6958 + ... + 7136.

It is an arithmetic number, because the mean of its divisors is an integer number (81900).

2^1261413 is an apocalyptic number.

It is an amenable number.

1261413 is a deficient number, since it is larger than the sum of its proper divisors (704187).

1261413 is an equidigital number, since it uses as much as digits as its factorization.

1261413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 211 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1261413 is about 1123.1264398989. The cubic root of 1261413 is about 108.0485892475.

It can be divided in two parts, 12 and 61413, that added together give a triangular number (61425 = T₃₅₀).

The spelling of 1261413 in words is "one million, two hundred sixty-one thousand, four hundred thirteen".