442322429 has 2 divisors, whose sum is σ = 442322430. Its totient is φ = 442322428.

The previous prime is 442322401. The next prime is 442322449. The reversal of 442322429 is 924223244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 432556804 + 9765625 = 20798^2 + 3125^2 .

It is a cyclic number.

It is not a de Polignac number, because 442322429 - 2¹² = 442318333 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 442322395 and 442322404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442322449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221161214 + 221161215.

It is an arithmetic number, because the mean of its divisors is an integer number (221161215).

Almost surely, 2^442322429 is an apocalyptic number.

It is an amenable number.

442322429 is a deficient number, since it is larger than the sum of its proper divisors (1).

442322429 is an equidigital number, since it uses as much as digits as its factorization.

442322429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 32.

The square root of 442322429 is about 21031.4628354758. The cubic root of 442322429 is about 761.9263396027.

The spelling of 442322429 in words is "four hundred forty-two million, three hundred twenty-two thousand, four hundred twenty-nine".