1205056879 has 4 divisors (see below), whose sum is σ = 1297753576. Its totient is φ = 1112360184.

The previous prime is 1205056861. The next prime is 1205056889. The reversal of 1205056879 is 9786505021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1205056879 - 2²⁹ = 668185967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205056889) 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, 46348329 + ... + 46348354.

It is an arithmetic number, because the mean of its divisors is an integer number (324438394).

Almost surely, 2^1205056879 is an apocalyptic number.

1205056879 is a deficient number, since it is larger than the sum of its proper divisors (92696697).

1205056879 is an equidigital number, since it uses as much as digits as its factorization.

1205056879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92696696.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 1205056879 is about 34713.9291783572. The cubic root of 1205056879 is about 1064.1491816825.

The spelling of 1205056879 in words is "one billion, two hundred five million, fifty-six thousand, eight hundred seventy-nine".