442133413 has 2 divisors, whose sum is σ = 442133414. Its totient is φ = 442133412.

The previous prime is 442133389. The next prime is 442133423. The reversal of 442133413 is 314331244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254498209 + 187635204 = 15953^2 + 13698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442133413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442133423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221066706 + 221066707.

It is an arithmetic number, because the mean of its divisors is an integer number (221066707).

Almost surely, 2^442133413 is an apocalyptic number.

It is an amenable number.

442133413 is a deficient number, since it is larger than the sum of its proper divisors (1).

442133413 is an equidigital number, since it uses as much as digits as its factorization.

442133413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 25.

The square root of 442133413 is about 21026.9687068774. The cubic root of 442133413 is about 761.8177937559.

Adding to 442133413 its reverse (314331244), we get a palindrome (756464657).

The spelling of 442133413 in words is "four hundred forty-two million, one hundred thirty-three thousand, four hundred thirteen".