42165640323 has 12 divisors (see below), whose sum is σ = 60908653728. Its totient is φ = 28109167440.

The previous prime is 42165640289. The next prime is 42165640381. The reversal of 42165640323 is 32304656124.

42165640323 is a `hidden beast` number, since 4 + 2 + 1 + 6 + 5 + 640 + 3 + 2 + 3 = 666.

It is not a de Polignac number, because 42165640323 - 2⁶ = 42165640259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42165640393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136261 + ... + 320777.

It is an arithmetic number, because the mean of its divisors is an integer number (5075721144).

Almost surely, 2^42165640323 is an apocalyptic number.

42165640323 is a deficient number, since it is larger than the sum of its proper divisors (18743013405).

42165640323 is a wasteful number, since it uses less digits than its factorization.

42165640323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209914 (or 209911 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 42165640323 in words is "forty-two billion, one hundred sixty-five million, six hundred forty thousand, three hundred twenty-three".