42864197 has 4 divisors (see below), whose sum is σ = 43002336. Its totient is φ = 42726060.

The previous prime is 42864193. The next prime is 42864221. The reversal of 42864197 is 79146824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42864197 - 2² = 42864193 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 (42864193) 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 in 3 ways as a sum of consecutive naturals, for example, 68603 + ... + 69224.

It is an arithmetic number, because the mean of its divisors is an integer number (10750584).

Almost surely, 2^42864197 is an apocalyptic number.

It is an amenable number.

42864197 is a deficient number, since it is larger than the sum of its proper divisors (138139).

42864197 is a wasteful number, since it uses less digits than its factorization.

42864197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138138.

The product of its digits is 96768, while the sum is 41.

The square root of 42864197 is about 6547.0754539718. The cubic root of 42864197 is about 349.9706016124.

The spelling of 42864197 in words is "forty-two million, eight hundred sixty-four thousand, one hundred ninety-seven".