4442020123 has 2 divisors, whose sum is σ = 4442020124. Its totient is φ = 4442020122.

The previous prime is 4442020111. The next prime is 4442020129. The reversal of 4442020123 is 3210202444.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4442020123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4442020094 and 4442020103.

It is not a weakly prime, because it can be changed into another prime (4442020129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2221010061 + 2221010062.

It is an arithmetic number, because the mean of its divisors is an integer number (2221010062).

Almost surely, 2^4442020123 is an apocalyptic number.

4442020123 is a deficient number, since it is larger than the sum of its proper divisors (1).

4442020123 is an equidigital number, since it uses as much as digits as its factorization.

4442020123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 4442020123 is about 66648.4817756564. The cubic root of 4442020123 is about 1643.8423839743.

Adding to 4442020123 its reverse (3210202444), we get a palindrome (7652222567).

The spelling of 4442020123 in words is "four billion, four hundred forty-two million, twenty thousand, one hundred twenty-three".