64242111 has 4 divisors (see below), whose sum is σ = 85656152. Its totient is φ = 42828072.

The previous prime is 64242109. The next prime is 64242119. The reversal of 64242111 is 11124246.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64242111 - 2¹ = 64242109 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 (64242119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10707016 + ... + 10707021.

It is an arithmetic number, because the mean of its divisors is an integer number (21414038).

Almost surely, 2^64242111 is an apocalyptic number.

64242111 is a deficient number, since it is larger than the sum of its proper divisors (21414041).

64242111 is a wasteful number, since it uses less digits than its factorization.

64242111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21414040.

The product of its digits is 384, while the sum is 21.

The square root of 64242111 is about 8015.1176535345. The cubic root of 64242111 is about 400.5037632069.

Adding to 64242111 its reverse (11124246), we get a palindrome (75366357).

The spelling of 64242111 in words is "sixty-four million, two hundred forty-two thousand, one hundred eleven".