442369157 has 2 divisors, whose sum is σ = 442369158. Its totient is φ = 442369156.

The previous prime is 442369127. The next prime is 442369159. The reversal of 442369157 is 751963244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377952481 + 64416676 = 19441^2 + 8026^2 .

It is a cyclic number.

It is not a de Polignac number, because 442369157 - 2⁶ = 442369093 is a prime.

Together with 442369159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442369159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221184578 + 221184579.

It is an arithmetic number, because the mean of its divisors is an integer number (221184579).

Almost surely, 2^442369157 is an apocalyptic number.

It is an amenable number.

442369157 is a deficient number, since it is larger than the sum of its proper divisors (1).

442369157 is an equidigital number, since it uses as much as digits as its factorization.

442369157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 442369157 is about 21032.5737131717. The cubic root of 442369157 is about 761.9531692320.

The spelling of 442369157 in words is "four hundred forty-two million, three hundred sixty-nine thousand, one hundred fifty-seven".