442245923 has 12 divisors (see below), whose sum is σ = 514792080. Its totient is φ = 378815472.

The previous prime is 442245917. The next prime is 442245929. The reversal of 442245923 is 329542244.

It is an interprime number because it is at equal distance from previous prime (442245917) and next prime (442245929).

It is not a de Polignac number, because 442245923 - 2¹² = 442241827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442245929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140693 + ... + 143801.

It is an arithmetic number, because the mean of its divisors is an integer number (42899340).

Almost surely, 2^442245923 is an apocalyptic number.

442245923 is a deficient number, since it is larger than the sum of its proper divisors (72546157).

442245923 is a wasteful number, since it uses less digits than its factorization.

442245923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6026 (or 6019 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 442245923 is about 21029.6439104422. The cubic root of 442245923 is about 761.8824083783.

The spelling of 442245923 in words is "four hundred forty-two million, two hundred forty-five thousand, nine hundred twenty-three".