2129719 has 2 divisors, whose sum is σ = 2129720. Its totient is φ = 2129718.

The previous prime is 2129713. The next prime is 2129741. The reversal of 2129719 is 9179212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2129719 - 2⁹ = 2129207 is a prime.

It is a super-2 number, since 2×2129719² = 9071406037922, which contains 22 as substring.

2129719 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129713) 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, 1064859 + 1064860.

It is an arithmetic number, because the mean of its divisors is an integer number (1064860).

2^2129719 is an apocalyptic number.

2129719 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129719 is an equidigital number, since it uses as much as digits as its factorization.

2129719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 31.

The square root of 2129719 is about 1459.3556797436. The cubic root of 2129719 is about 128.6591768425.

It can be divided in two parts, 21297 and 19, that added together give a square (21316 = 146²).

The spelling of 2129719 in words is "two million, one hundred twenty-nine thousand, seven hundred nineteen".