1261379 has 8 divisors (see below), whose sum is σ = 1448448. Its totient is φ = 1076040.

The previous prime is 1261373. The next prime is 1261387. The reversal of 1261379 is 9731621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1261379 - 2⁴ = 1261363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1261373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2324 + ... + 2814.

It is an arithmetic number, because the mean of its divisors is an integer number (181056).

2^1261379 is an apocalyptic number.

1261379 is a deficient number, since it is larger than the sum of its proper divisors (187069).

1261379 is an equidigital number, since it uses as much as digits as its factorization.

1261379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865.

The product of its digits is 2268, while the sum is 29.

The square root of 1261379 is about 1123.1113034780. Note that the first 3 decimals coincide. The cubic root of 1261379 is about 108.0476184618.

The spelling of 1261379 in words is "one million, two hundred sixty-one thousand, three hundred seventy-nine".