106042609 has 4 divisors (see below), whose sum is σ = 106167204. Its totient is φ = 105918016.

The previous prime is 106042577. The next prime is 106042621. The reversal of 106042609 is 906240601.

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 98903025 + 7139584 = 9945^2 + 2672^2 .

It is a cyclic number.

It is not a de Polignac number, because 106042609 - 2⁵ = 106042577 is a prime.

It is a super-2 number, since 2×106042609² = 22490069847053762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106042639) 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, 61012 + ... + 62725.

It is an arithmetic number, because the mean of its divisors is an integer number (26541801).

Almost surely, 2^106042609 is an apocalyptic number.

It is an amenable number.

106042609 is a deficient number, since it is larger than the sum of its proper divisors (124595).

106042609 is an equidigital number, since it uses as much as digits as its factorization.

106042609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124594.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 106042609 is about 10297.6992090466. The cubic root of 106042609 is about 473.3257533116.

The spelling of 106042609 in words is "one hundred six million, forty-two thousand, six hundred nine".