42142645019 has 2 divisors, whose sum is σ = 42142645020. Its totient is φ = 42142645018.

The previous prime is 42142645007. The next prime is 42142645067. The reversal of 42142645019 is 91054624124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42142645019 - 2⁴ = 42142645003 is a prime.

It is a super-2 number, since 2×42142645019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42142645099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21071322509 + 21071322510.

It is an arithmetic number, because the mean of its divisors is an integer number (21071322510).

Almost surely, 2^42142645019 is an apocalyptic number.

42142645019 is a deficient number, since it is larger than the sum of its proper divisors (1).

42142645019 is an equidigital number, since it uses as much as digits as its factorization.

42142645019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 42142645019 in words is "forty-two billion, one hundred forty-two million, six hundred forty-five thousand, nineteen".