42380189 has 2 divisors, whose sum is σ = 42380190. Its totient is φ = 42380188.

The previous prime is 42380161. The next prime is 42380227. The reversal of 42380189 is 98108324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30360100 + 12020089 = 5510^2 + 3467^2 .

It is a cyclic number.

It is not a de Polignac number, because 42380189 - 2²⁰ = 41331613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42380119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21190094 + 21190095.

It is an arithmetic number, because the mean of its divisors is an integer number (21190095).

Almost surely, 2^42380189 is an apocalyptic number.

It is an amenable number.

42380189 is a deficient number, since it is larger than the sum of its proper divisors (1).

42380189 is an equidigital number, since it uses as much as digits as its factorization.

42380189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 42380189 is about 6510.0068356339. The cubic root of 42380189 is about 348.6483624464.

The spelling of 42380189 in words is "forty-two million, three hundred eighty thousand, one hundred eighty-nine".