42165323 has 2 divisors, whose sum is σ = 42165324. Its totient is φ = 42165322.

The previous prime is 42165307. The next prime is 42165341. The reversal of 42165323 is 32356124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42165323 - 2⁴ = 42165307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42165292 and 42165301.

It is not a weakly prime, because it can be changed into another prime (42165373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21082661 + 21082662.

It is an arithmetic number, because the mean of its divisors is an integer number (21082662).

Almost surely, 2^42165323 is an apocalyptic number.

42165323 is a deficient number, since it is larger than the sum of its proper divisors (1).

42165323 is an equidigital number, since it uses as much as digits as its factorization.

42165323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 42165323 is about 6493.4831177112. The cubic root of 42165323 is about 348.0581524125.

The spelling of 42165323 in words is "forty-two million, one hundred sixty-five thousand, three hundred twenty-three".