42052120121369 has 2 divisors, whose sum is σ = 42052120121370. Its totient is φ = 42052120121368.

The previous prime is 42052120121359. The next prime is 42052120121377. The reversal of 42052120121369 is 96312102125024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40945601265625 + 1106518855744 = 6398875^2 + 1051912^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42052120121369 is a prime.

It is a super-2 number, since 2×42052120121369² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42052120121359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21026060060684 + 21026060060685.

It is an arithmetic number, because the mean of its divisors is an integer number (21026060060685).

Almost surely, 2^{42052120121369} is an apocalyptic number.

It is an amenable number.

42052120121369 is a deficient number, since it is larger than the sum of its proper divisors (1).

42052120121369 is an equidigital number, since it uses as much as digits as its factorization.

42052120121369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 42052120121369 in words is "forty-two trillion, fifty-two billion, one hundred twenty million, one hundred twenty-one thousand, three hundred sixty-nine".