42375487643 has 2 divisors, whose sum is σ = 42375487644. Its totient is φ = 42375487642.

The previous prime is 42375487579. The next prime is 42375487757. The reversal of 42375487643 is 34678457324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42375487643 - 2⁶ = 42375487579 is a prime.

It is not a weakly prime, because it can be changed into another prime (42375487043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21187743821 + 21187743822.

It is an arithmetic number, because the mean of its divisors is an integer number (21187743822).

Almost surely, 2^42375487643 is an apocalyptic number.

42375487643 is a deficient number, since it is larger than the sum of its proper divisors (1).

42375487643 is an equidigital number, since it uses as much as digits as its factorization.

42375487643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13547520, while the sum is 53.

The spelling of 42375487643 in words is "forty-two billion, three hundred seventy-five million, four hundred eighty-seven thousand, six hundred forty-three".