442123343 has 2 divisors, whose sum is σ = 442123344. Its totient is φ = 442123342.

The previous prime is 442123307. The next prime is 442123349. The reversal of 442123343 is 343321244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442123343 - 2¹⁰ = 442122319 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442123349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221061671 + 221061672.

It is an arithmetic number, because the mean of its divisors is an integer number (221061672).

Almost surely, 2^442123343 is an apocalyptic number.

442123343 is a deficient number, since it is larger than the sum of its proper divisors (1).

442123343 is an equidigital number, since it uses as much as digits as its factorization.

442123343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 26.

The square root of 442123343 is about 21026.7292511222. The cubic root of 442123343 is about 761.8120100089.

Adding to 442123343 its reverse (343321244), we get a palindrome (785444587).

The spelling of 442123343 in words is "four hundred forty-two million, one hundred twenty-three thousand, three hundred forty-three".