2123247879 has 12 divisors (see below), whose sum is σ = 3068065000. Its totient is φ = 1414967184.

The previous prime is 2123247839. The next prime is 2123247887. The reversal of 2123247879 is 9787423212.

It is not a de Polignac number, because 2123247879 - 2⁷ = 2123247751 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 (2123247839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18169 + ... + 67650.

Almost surely, 2^2123247879 is an apocalyptic number.

2123247879 is a deficient number, since it is larger than the sum of its proper divisors (944817121).

2123247879 is a wasteful number, since it uses less digits than its factorization.

2123247879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88574 (or 88571 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 2123247879 is about 46078.7139468974. The cubic root of 2123247879 is about 1285.2873494265.

The spelling of 2123247879 in words is "two billion, one hundred twenty-three million, two hundred forty-seven thousand, eight hundred seventy-nine".