2125979 has 4 divisors (see below), whose sum is σ = 2155176. Its totient is φ = 2096784.

The previous prime is 2125939. The next prime is 2125987. The reversal of 2125979 is 9795212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125979 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (2125919) 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, 14489 + ... + 14634.

It is an arithmetic number, because the mean of its divisors is an integer number (538794).

2^2125979 is an apocalyptic number.

2125979 is a deficient number, since it is larger than the sum of its proper divisors (29197).

2125979 is an equidigital number, since it uses as much as digits as its factorization.

2125979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29196.

The product of its digits is 11340, while the sum is 35.

The square root of 2125979 is about 1458.0737292743. The cubic root of 2125979 is about 128.5838199110.

The spelling of 2125979 in words is "two million, one hundred twenty-five thousand, nine hundred seventy-nine".