442111253 has 2 divisors, whose sum is σ = 442111254. Its totient is φ = 442111252.

The previous prime is 442111217. The next prime is 442111277. The reversal of 442111253 is 352111244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400920529 + 41190724 = 20023^2 + 6418^2 .

It is a cyclic number.

It is not a de Polignac number, because 442111253 - 2²⁴ = 425334037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442111753) 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, 221055626 + 221055627.

It is an arithmetic number, because the mean of its divisors is an integer number (221055627).

Almost surely, 2^442111253 is an apocalyptic number.

It is an amenable number.

442111253 is a deficient number, since it is larger than the sum of its proper divisors (1).

442111253 is an equidigital number, since it uses as much as digits as its factorization.

442111253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 442111253 is about 21026.4417579390. The cubic root of 442111253 is about 761.8050659504.

Adding to 442111253 its reverse (352111244), we get a palindrome (794222497).

Subtracting from 442111253 its reverse (352111244), we obtain a palindrome (90000009).

The spelling of 442111253 in words is "four hundred forty-two million, one hundred eleven thousand, two hundred fifty-three".