8142169 has 4 divisors (see below), whose sum is σ = 9305344. Its totient is φ = 6978996.

The previous prime is 8142157. The next prime is 8142221. The reversal of 8142169 is 9612418.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8142169 - 2⁵ = 8142137 is a prime.

It is a super-2 number, since 2×8142169² = 132589832049122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8142169.

It is not an unprimeable number, because it can be changed into a prime (8142569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581577 + ... + 581590.

It is an arithmetic number, because the mean of its divisors is an integer number (2326336).

Almost surely, 2^8142169 is an apocalyptic number.

It is an amenable number.

8142169 is a deficient number, since it is larger than the sum of its proper divisors (1163175).

8142169 is a wasteful number, since it uses less digits than its factorization.

8142169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163174.

The product of its digits is 3456, while the sum is 31.

The square root of 8142169 is about 2853.4486152724. The cubic root of 8142169 is about 201.1777920805.

The spelling of 8142169 in words is "eight million, one hundred forty-two thousand, one hundred sixty-nine".