42000181507 has 2 divisors, whose sum is σ = 42000181508. Its totient is φ = 42000181506.

The previous prime is 42000181499. The next prime is 42000181513. The reversal of 42000181507 is 70518100024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42000181507 - 2³ = 42000181499 is a prime.

It is not a weakly prime, because it can be changed into another prime (42000181007) 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, 21000090753 + 21000090754.

It is an arithmetic number, because the mean of its divisors is an integer number (21000090754).

Almost surely, 2^42000181507 is an apocalyptic number.

42000181507 is a deficient number, since it is larger than the sum of its proper divisors (1).

42000181507 is an equidigital number, since it uses as much as digits as its factorization.

42000181507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The spelling of 42000181507 in words is "forty-two billion, one hundred eighty-one thousand, five hundred seven".