442214431 has 2 divisors, whose sum is σ = 442214432. Its totient is φ = 442214430.

The previous prime is 442214407. The next prime is 442214449. The reversal of 442214431 is 134412244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442214431 - 2¹⁷ = 442083359 is a prime.

It is a super-2 number, since 2×442214431² = 391107205969307522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442214396 and 442214405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442214401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221107215 + 221107216.

It is an arithmetic number, because the mean of its divisors is an integer number (221107216).

Almost surely, 2^442214431 is an apocalyptic number.

442214431 is a deficient number, since it is larger than the sum of its proper divisors (1).

442214431 is an equidigital number, since it uses as much as digits as its factorization.

442214431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 25.

The square root of 442214431 is about 21028.8951445386. The cubic root of 442214431 is about 761.8643235911.

Adding to 442214431 its reverse (134412244), we get a palindrome (576626675).

The spelling of 442214431 in words is "four hundred forty-two million, two hundred fourteen thousand, four hundred thirty-one".