42864193 has 2 divisors, whose sum is σ = 42864194. Its totient is φ = 42864192.

The previous prime is 42864187. The next prime is 42864221. The reversal of 42864193 is 39146824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40870449 + 1993744 = 6393^2 + 1412^2 .

It is a cyclic number.

It is not a de Polignac number, because 42864193 - 2⁵ = 42864161 is a prime.

It is not a weakly prime, because it can be changed into another prime (42864113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21432096 + 21432097.

It is an arithmetic number, because the mean of its divisors is an integer number (21432097).

Almost surely, 2^42864193 is an apocalyptic number.

It is an amenable number.

42864193 is a deficient number, since it is larger than the sum of its proper divisors (1).

42864193 is an equidigital number, since it uses as much as digits as its factorization.

42864193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 37.

The square root of 42864193 is about 6547.0751484919. The cubic root of 42864193 is about 349.9705907262.

The spelling of 42864193 in words is "forty-two million, eight hundred sixty-four thousand, one hundred ninety-three".