442251263 has 2 divisors, whose sum is σ = 442251264. Its totient is φ = 442251262.

The previous prime is 442251253. The next prime is 442251287. The reversal of 442251263 is 362152244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442251263 - 2¹² = 442247167 is a prime.

It is a Sophie Germain 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 (442251233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221125631 + 221125632.

It is an arithmetic number, because the mean of its divisors is an integer number (221125632).

Almost surely, 2^442251263 is an apocalyptic number.

442251263 is a deficient number, since it is larger than the sum of its proper divisors (1).

442251263 is an equidigital number, since it uses as much as digits as its factorization.

442251263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 29.

The square root of 442251263 is about 21029.7708736924. The cubic root of 442251263 is about 761.8854748741.

The spelling of 442251263 in words is "four hundred forty-two million, two hundred fifty-one thousand, two hundred sixty-three".