440002123 has 16 divisors (see below), whose sum is σ = 503573760. Its totient is φ = 380749600.

The previous prime is 440002111. The next prime is 440002141. The reversal of 440002123 is 321200044.

It is not a de Polignac number, because 440002123 - 2⁵ = 440002091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440002097 and 440002106.

It is not an unprimeable number, because it can be changed into a prime (440002163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12936 + ... + 32362.

It is an arithmetic number, because the mean of its divisors is an integer number (31473360).

Almost surely, 2^440002123 is an apocalyptic number.

440002123 is a deficient number, since it is larger than the sum of its proper divisors (63571637).

440002123 is a wasteful number, since it uses less digits than its factorization.

440002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19538.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 440002123 is about 20976.2275683689. The cubic root of 440002123 is about 760.5917154334.

Adding to 440002123 its reverse (321200044), we get a palindrome (761202167).

It can be divided in two parts, 4400021 and 23, that added together give a palindrome (4400044).

The spelling of 440002123 in words is "four hundred forty million, two thousand, one hundred twenty-three".