1178261 has 4 divisors (see below), whose sum is σ = 1346592. Its totient is φ = 1009932.

The previous prime is 1178239. The next prime is 1178263. The reversal of 1178261 is 1628711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1178261 - 2⁶ = 1178197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1178261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1178263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84155 + ... + 84168.

It is an arithmetic number, because the mean of its divisors is an integer number (336648).

2^1178261 is an apocalyptic number.

It is an amenable number.

1178261 is a deficient number, since it is larger than the sum of its proper divisors (168331).

1178261 is an equidigital number, since it uses as much as digits as its factorization.

1178261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168330.

The product of its digits is 672, while the sum is 26.

The square root of 1178261 is about 1085.4773143645. The cubic root of 1178261 is about 105.6202442918.

The spelling of 1178261 in words is "one million, one hundred seventy-eight thousand, two hundred sixty-one".