2125840279 has 2 divisors, whose sum is σ = 2125840280. Its totient is φ = 2125840278.

The previous prime is 2125840243. The next prime is 2125840303. The reversal of 2125840279 is 9720485212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2125840279 - 2²³ = 2117451671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2125840979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062920139 + 1062920140.

It is an arithmetic number, because the mean of its divisors is an integer number (1062920140).

Almost surely, 2^2125840279 is an apocalyptic number.

2125840279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125840279 is an equidigital number, since it uses as much as digits as its factorization.

2125840279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 2125840279 is about 46106.8354910636. The cubic root of 2125840279 is about 1285.8102313449.

The spelling of 2125840279 in words is "two billion, one hundred twenty-five million, eight hundred forty thousand, two hundred seventy-nine".