42810169 has 4 divisors (see below), whose sum is σ = 42823396. Its totient is φ = 42796944.

The previous prime is 42810149. The next prime is 42810181. The reversal of 42810169 is 96101824.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 39879225 + 2930944 = 6315^2 + 1712^2 .

It is a cyclic number.

It is not a de Polignac number, because 42810169 - 2⁵ = 42810137 is a prime.

It is a super-2 number, since 2×42810169² = 3665421139617122, 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 42810169.

It is not an unprimeable number, because it can be changed into a prime (42810139) 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, 1867 + ... + 9439.

It is an arithmetic number, because the mean of its divisors is an integer number (10705849).

Almost surely, 2^42810169 is an apocalyptic number.

It is an amenable number.

42810169 is a deficient number, since it is larger than the sum of its proper divisors (13227).

42810169 is an equidigital number, since it uses as much as digits as its factorization.

42810169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13226.

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

The square root of 42810169 is about 6542.9480358627. The cubic root of 42810169 is about 349.8235001243.

The spelling of 42810169 in words is "forty-two million, eight hundred ten thousand, one hundred sixty-nine".