42354289 has 2 divisors, whose sum is σ = 42354290. Its totient is φ = 42354288.

The previous prime is 42354283. The next prime is 42354311. The reversal of 42354289 is 98245324.

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., 42354064 + 225 = 6508^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 42354289 - 2⁷ = 42354161 is a prime.

It is not a weakly prime, because it can be changed into another prime (42354283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21177144 + 21177145.

It is an arithmetic number, because the mean of its divisors is an integer number (21177145).

Almost surely, 2^42354289 is an apocalyptic number.

It is an amenable number.

42354289 is a deficient number, since it is larger than the sum of its proper divisors (1).

42354289 is an equidigital number, since it uses as much as digits as its factorization.

42354289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

The square root of 42354289 is about 6508.0172863938. The cubic root of 42354289 is about 348.5773242802.

The spelling of 42354289 in words is "forty-two million, three hundred fifty-four thousand, two hundred eighty-nine".