42002019907 has 2 divisors, whose sum is σ = 42002019908. Its totient is φ = 42002019906.

The previous prime is 42002019893. The next prime is 42002019911. The reversal of 42002019907 is 70991020024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42002019907 - 2³¹ = 39854536259 is a prime.

It is not a weakly prime, because it can be changed into another prime (42002019977) 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, 21001009953 + 21001009954.

It is an arithmetic number, because the mean of its divisors is an integer number (21001009954).

Almost surely, 2^42002019907 is an apocalyptic number.

42002019907 is a deficient number, since it is larger than the sum of its proper divisors (1).

42002019907 is an equidigital number, since it uses as much as digits as its factorization.

42002019907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 42002019907 in words is "forty-two billion, two million, nineteen thousand, nine hundred seven".