2129423 has 2 divisors, whose sum is σ = 2129424. Its totient is φ = 2129422.

The previous prime is 2129419. The next prime is 2129431. The reversal of 2129423 is 3249212.

2129423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2129423 - 2² = 2129419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064711 + 1064712.

It is an arithmetic number, because the mean of its divisors is an integer number (1064712).

2^2129423 is an apocalyptic number.

2129423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129423 is an equidigital number, since it uses as much as digits as its factorization.

2129423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 2129423 is about 1459.2542616008. The cubic root of 2129423 is about 128.6532159808.

It can be divided in two parts, 2129 and 423, that added together give a palindrome (2552).

The spelling of 2129423 in words is "two million, one hundred twenty-nine thousand, four hundred twenty-three".