42046189 has 2 divisors, whose sum is σ = 42046190. Its totient is φ = 42046188.

The previous prime is 42046187. The next prime is 42046241. The reversal of 42046189 is 98164024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42029289 + 16900 = 6483^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 42046189 - 2¹ = 42046187 is a prime.

Together with 42046187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42046187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21023094 + 21023095.

It is an arithmetic number, because the mean of its divisors is an integer number (21023095).

Almost surely, 2^42046189 is an apocalyptic number.

It is an amenable number.

42046189 is a deficient number, since it is larger than the sum of its proper divisors (1).

42046189 is an equidigital number, since it uses as much as digits as its factorization.

42046189 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 34.

The square root of 42046189 is about 6484.3032779166. The cubic root of 42046189 is about 347.7300417702.

The spelling of 42046189 in words is "forty-two million, forty-six thousand, one hundred eighty-nine".