42922189 has 4 divisors (see below), whose sum is σ = 42936124. Its totient is φ = 42908256.

The previous prime is 42922181. The next prime is 42922199. The reversal of 42922189 is 98122924.

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 22401289 + 20520900 = 4733^2 + 4530^2 .

It is a cyclic number.

It is not a de Polignac number, because 42922189 - 2³ = 42922181 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 (42922181) 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, 72 + ... + 9265.

It is an arithmetic number, because the mean of its divisors is an integer number (10734031).

Almost surely, 2^42922189 is an apocalyptic number.

It is an amenable number.

42922189 is a deficient number, since it is larger than the sum of its proper divisors (13935).

42922189 is an equidigital number, since it uses as much as digits as its factorization.

42922189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13934.

The product of its digits is 20736, while the sum is 37.

The square root of 42922189 is about 6551.5028047006. The cubic root of 42922189 is about 350.1283583625.

The spelling of 42922189 in words is "forty-two million, nine hundred twenty-two thousand, one hundred eighty-nine".