2125919 has 2 divisors, whose sum is σ = 2125920. Its totient is φ = 2125918.

The previous prime is 2125889. The next prime is 2125927. The reversal of 2125919 is 9195212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125919 is a prime.

It is a super-2 number, since 2×2125919² = 9039063189122, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2125891 and 2125900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2125939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062959 + 1062960.

It is an arithmetic number, because the mean of its divisors is an integer number (1062960).

2^2125919 is an apocalyptic number.

2125919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125919 is an equidigital number, since it uses as much as digits as its factorization.

2125919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 29.

The square root of 2125919 is about 1458.0531540379. The cubic root of 2125919 is about 128.5826102562.

The spelling of 2125919 in words is "two million, one hundred twenty-five thousand, nine hundred nineteen".