442423241 has 12 divisors (see below), whose sum is σ = 487204560. Its totient is φ = 401459760.

The previous prime is 442423237. The next prime is 442423253. The reversal of 442423241 is 142324244.

It is a happy number.

It is not a de Polignac number, because 442423241 - 2² = 442423237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442423241.

It is not an unprimeable number, because it can be changed into a prime (442423211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12215 + ... + 32156.

It is an arithmetic number, because the mean of its divisors is an integer number (40600380).

Almost surely, 2^442423241 is an apocalyptic number.

It is an amenable number.

442423241 is a deficient number, since it is larger than the sum of its proper divisors (44781319).

442423241 is a wasteful number, since it uses less digits than its factorization.

442423241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44456 (or 44443 counting only the distinct ones).

The product of its digits is 6144, while the sum is 26.

The square root of 442423241 is about 21033.8593938440. The cubic root of 442423241 is about 761.9842200676.

Adding to 442423241 its reverse (142324244), we get a palindrome (584747485).

The spelling of 442423241 in words is "four hundred forty-two million, four hundred twenty-three thousand, two hundred forty-one".