442023561403 has 2 divisors, whose sum is σ = 442023561404. Its totient is φ = 442023561402.

The previous prime is 442023561383. The next prime is 442023561431. The reversal of 442023561403 is 304165320244.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442023561403 is a prime.

It is a super-2 number, since 2×442023561403² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442023561443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221011780701 + 221011780702.

It is an arithmetic number, because the mean of its divisors is an integer number (221011780702).

Almost surely, 2^442023561403 is an apocalyptic number.

442023561403 is a deficient number, since it is larger than the sum of its proper divisors (1).

442023561403 is an equidigital number, since it uses as much as digits as its factorization.

442023561403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 442023561403 its reverse (304165320244), we get a palindrome (746188881647).

The spelling of 442023561403 in words is "four hundred forty-two billion, twenty-three million, five hundred sixty-one thousand, four hundred three".