2125679 has 2 divisors, whose sum is σ = 2125680. Its totient is φ = 2125678.

The previous prime is 2125661. The next prime is 2125681. The reversal of 2125679 is 9765212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125679 is a prime.

It is a super-2 number, since 2×2125679² = 9037022422082, which contains 22 as substring.

Together with 2125681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2125649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062839 + 1062840.

It is an arithmetic number, because the mean of its divisors is an integer number (1062840).

2^2125679 is an apocalyptic number.

2125679 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125679 is an equidigital number, since it uses as much as digits as its factorization.

2125679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 2125679 is about 1457.9708501887. The cubic root of 2125679 is about 128.5777714096.

The spelling of 2125679 in words is "two million, one hundred twenty-five thousand, six hundred seventy-nine".