42120032240017 has 2 divisors, whose sum is σ = 42120032240018. Its totient is φ = 42120032240016.

The previous prime is 42120032239979. The next prime is 42120032240053. The reversal of 42120032240017 is 71004223002124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40888555981056 + 1231476258961 = 6394416^2 + 1109719^2 .

It is a cyclic number.

It is not a de Polignac number, because 42120032240017 - 2²⁷ = 42119898022289 is a prime.

It is not a weakly prime, because it can be changed into another prime (42120032240617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21060016120008 + 21060016120009.

It is an arithmetic number, because the mean of its divisors is an integer number (21060016120009).

Almost surely, 2^{42120032240017} is an apocalyptic number.

It is an amenable number.

42120032240017 is a deficient number, since it is larger than the sum of its proper divisors (1).

42120032240017 is an equidigital number, since it uses as much as digits as its factorization.

42120032240017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The spelling of 42120032240017 in words is "forty-two trillion, one hundred twenty billion, thirty-two million, two hundred forty thousand, seventeen".