442144037 has 2 divisors, whose sum is σ = 442144038. Its totient is φ = 442144036.

The previous prime is 442144033. The next prime is 442144039. The reversal of 442144037 is 730441244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240901441 + 201242596 = 15521^2 + 14186^2 .

It is a cyclic number.

It is not a de Polignac number, because 442144037 - 2² = 442144033 is a prime.

It is a super-3 number, since 3×442144037³ (a number of 27 digits) contains 333 as substring.

Together with 442144039, 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 (442144033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221072018 + 221072019.

It is an arithmetic number, because the mean of its divisors is an integer number (221072019).

Almost surely, 2^442144037 is an apocalyptic number.

It is an amenable number.

442144037 is a deficient number, since it is larger than the sum of its proper divisors (1).

442144037 is an equidigital number, since it uses as much as digits as its factorization.

442144037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 442144037 is about 21027.2213333098. The cubic root of 442144037 is about 761.8238956000.

The spelling of 442144037 in words is "four hundred forty-two million, one hundred forty-four thousand, thirty-seven".