42666231 has 8 divisors (see below), whose sum is σ = 57061504. Its totient is φ = 28357560.

The previous prime is 42666223. The next prime is 42666257. The reversal of 42666231 is 13266624.

42666231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42666231 - 2³ = 42666223 is a prime.

It is a super-2 number, since 2×42666231² = 3640814535490722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42666131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20491 + ... + 22476.

It is an arithmetic number, because the mean of its divisors is an integer number (7132688).

Almost surely, 2^42666231 is an apocalyptic number.

42666231 is a deficient number, since it is larger than the sum of its proper divisors (14395273).

42666231 is a wasteful number, since it uses less digits than its factorization.

42666231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43301.

The product of its digits is 10368, while the sum is 30.

The square root of 42666231 is about 6531.9392985544. The cubic root of 42666231 is about 349.4309965471.

It can be divided in two parts, 4266623 and 1, that added together give a palindrome (4266624).

The spelling of 42666231 in words is "forty-two million, six hundred sixty-six thousand, two hundred thirty-one".