2044400123 has 2 divisors, whose sum is σ = 2044400124. Its totient is φ = 2044400122.

The previous prime is 2044400117. The next prime is 2044400143. The reversal of 2044400123 is 3210044402.

It is an a-pointer prime, because the next prime (2044400143) can be obtained adding 2044400123 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2044400123 - 2¹⁰ = 2044399099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2044400095 and 2044400104.

It is not a weakly prime, because it can be changed into another prime (2044400143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022200061 + 1022200062.

It is an arithmetic number, because the mean of its divisors is an integer number (1022200062).

Almost surely, 2^2044400123 is an apocalyptic number.

2044400123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2044400123 is an equidigital number, since it uses as much as digits as its factorization.

2044400123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2044400123 is about 45215.0431051437. The cubic root of 2044400123 is about 1269.1763363655.

Adding to 2044400123 its reverse (3210044402), we get a palindrome (5254444525).

The spelling of 2044400123 in words is "two billion, forty-four million, four hundred thousand, one hundred twenty-three".