442442131 has 2 divisors, whose sum is σ = 442442132. Its totient is φ = 442442130.

The previous prime is 442442101. The next prime is 442442149. The reversal of 442442131 is 131244244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442442131 - 2²³ = 434053523 is a prime.

It is a super-2 number, since 2×442442131² = 391510078567642322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442442096 and 442442105.

It is not a weakly prime, because it can be changed into another prime (442442101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221221065 + 221221066.

It is an arithmetic number, because the mean of its divisors is an integer number (221221066).

Almost surely, 2^442442131 is an apocalyptic number.

442442131 is a deficient number, since it is larger than the sum of its proper divisors (1).

442442131 is an equidigital number, since it uses as much as digits as its factorization.

442442131 is an odious number, because the sum of its binary digits is odd.

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

The square root of 442442131 is about 21034.3084269486. The cubic root of 442442131 is about 761.9950646433.

Adding to 442442131 its reverse (131244244), we get a palindrome (573686375).

The spelling of 442442131 in words is "four hundred forty-two million, four hundred forty-two thousand, one hundred thirty-one".