42003333643 has 2 divisors, whose sum is σ = 42003333644. Its totient is φ = 42003333642.

The previous prime is 42003333613. The next prime is 42003333653. The reversal of 42003333643 is 34633330024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42003333643 - 2¹³ = 42003325451 is a prime.

It is not a weakly prime, because it can be changed into another prime (42003333613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001666821 + 21001666822.

It is an arithmetic number, because the mean of its divisors is an integer number (21001666822).

Almost surely, 2^42003333643 is an apocalyptic number.

42003333643 is a deficient number, since it is larger than the sum of its proper divisors (1).

42003333643 is an equidigital number, since it uses as much as digits as its factorization.

42003333643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 31.

Adding to 42003333643 its reverse (34633330024), we get a palindrome (76636663667).

The spelling of 42003333643 in words is "forty-two billion, three million, three hundred thirty-three thousand, six hundred forty-three".