42040161834259 has 2 divisors, whose sum is σ = 42040161834260. Its totient is φ = 42040161834258.

The previous prime is 42040161834239. The next prime is 42040161834269. The reversal of 42040161834259 is 95243816104024.

42040161834259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42040161834259 is a prime.

It is not a weakly prime, because it can be changed into another prime (42040161834239) 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, 21020080917129 + 21020080917130.

It is an arithmetic number, because the mean of its divisors is an integer number (21020080917130).

Almost surely, 2^{42040161834259} is an apocalyptic number.

42040161834259 is a deficient number, since it is larger than the sum of its proper divisors (1).

42040161834259 is an equidigital number, since it uses as much as digits as its factorization.

42040161834259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 42040161834259 in words is "forty-two trillion, forty billion, one hundred sixty-one million, eight hundred thirty-four thousand, two hundred fifty-nine".