42354154165 has 4 divisors (see below), whose sum is σ = 50824985004. Its totient is φ = 33883323328.

The previous prime is 42354154159. The next prime is 42354154169. The reversal of 42354154165 is 56145145324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25078206321 + 17275947844 = 158361^2 + 131438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42354154165 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42354154169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4235415412 + ... + 4235415421.

It is an arithmetic number, because the mean of its divisors is an integer number (12706246251).

Almost surely, 2^42354154165 is an apocalyptic number.

It is an amenable number.

42354154165 is a deficient number, since it is larger than the sum of its proper divisors (8470830839).

42354154165 is an equidigital number, since it uses as much as digits as its factorization.

42354154165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8470830838.

The product of its digits is 288000, while the sum is 40.

Adding to 42354154165 its reverse (56145145324), we get a palindrome (98499299489).

The spelling of 42354154165 in words is "forty-two billion, three hundred fifty-four million, one hundred fifty-four thousand, one hundred sixty-five".