42165285242079 has 32 divisors (see below), whose sum is σ = 56922725583360. Its totient is φ = 27759823849472.

The previous prime is 42165285242063. The next prime is 42165285242107. The reversal of 42165285242079 is 97024258256124.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42165285242079 - 2⁴ = 42165285242063 is a prime.

It is a super-2 number, since 2×42165285242079² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42165285242279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 739804207 + ... + 739861199.

It is an arithmetic number, because the mean of its divisors is an integer number (1778835174480).

Almost surely, 2^{42165285242079} is an apocalyptic number.

42165285242079 is a deficient number, since it is larger than the sum of its proper divisors (14757440341281).

42165285242079 is a wasteful number, since it uses less digits than its factorization.

42165285242079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60479.

The product of its (nonzero) digits is 19353600, while the sum is 57.

The spelling of 42165285242079 in words is "forty-two trillion, one hundred sixty-five billion, two hundred eighty-five million, two hundred forty-two thousand, seventy-nine".