42021311434169 has 2 divisors, whose sum is σ = 42021311434170. Its totient is φ = 42021311434168.

The previous prime is 42021311434127. The next prime is 42021311434187. The reversal of 42021311434169 is 96143411312024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29000508284944 + 13020803149225 = 5385212^2 + 3608435^2 .

It is a cyclic number.

It is not a de Polignac number, because 42021311434169 - 2³⁶ = 41952591957433 is a prime.

It is a super-2 number, since 2×42021311434169² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42021311434369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21010655717084 + 21010655717085.

It is an arithmetic number, because the mean of its divisors is an integer number (21010655717085).

Almost surely, 2^{42021311434169} is an apocalyptic number.

It is an amenable number.

42021311434169 is a deficient number, since it is larger than the sum of its proper divisors (1).

42021311434169 is an equidigital number, since it uses as much as digits as its factorization.

42021311434169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 42021311434169 in words is "forty-two trillion, twenty-one billion, three hundred eleven million, four hundred thirty-four thousand, one hundred sixty-nine".