42162122565 has 16 divisors (see below), whose sum is σ = 74954884800. Its totient is φ = 22486465296.

The previous prime is 42162122533. The next prime is 42162122677. The reversal of 42162122565 is 56522126124.

42162122565 is a `hidden beast` number, since 4 + 2 + 1 + 621 + 2 + 25 + 6 + 5 = 666.

It is not a de Polignac number, because 42162122565 - 2⁵ = 42162122533 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156155875 + ... + 156156144.

It is an arithmetic number, because the mean of its divisors is an integer number (4684680300).

Almost surely, 2^42162122565 is an apocalyptic number.

42162122565 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42162122565 is a deficient number, since it is larger than the sum of its proper divisors (32792762235).

42162122565 is a wasteful number, since it uses less digits than its factorization.

42162122565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312312033 (or 312312027 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 42162122565 its reverse (56522126124), we get a palindrome (98684248689).

The spelling of 42162122565 in words is "forty-two billion, one hundred sixty-two million, one hundred twenty-two thousand, five hundred sixty-five".