42122219 has 4 divisors (see below), whose sum is σ = 42495096. Its totient is φ = 41749344.

The previous prime is 42122207. The next prime is 42122231. The reversal of 42122219 is 91222124.

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

It is an interprime number because it is at equal distance from previous prime (42122207) and next prime (42122231).

It is a cyclic number.

It is not a de Polignac number, because 42122219 - 2²⁴ = 25345003 is a prime.

It is a super-2 number, since 2×42122219² = 3548562666967922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42122194 and 42122203.

It is not an unprimeable number, because it can be changed into a prime (42122299) 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, 186269 + ... + 186494.

It is an arithmetic number, because the mean of its divisors is an integer number (10623774).

Almost surely, 2^42122219 is an apocalyptic number.

42122219 is a deficient number, since it is larger than the sum of its proper divisors (372877).

42122219 is a wasteful number, since it uses less digits than its factorization.

42122219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372876.

The product of its digits is 576, while the sum is 23.

The square root of 42122219 is about 6490.1632491024. The cubic root of 42122219 is about 347.9395097882.

The spelling of 42122219 in words is "forty-two million, one hundred twenty-two thousand, two hundred nineteen".