42140231 has 8 divisors (see below), whose sum is σ = 48205344. Its totient is φ = 36086400.

The previous prime is 42140201. The next prime is 42140237. The reversal of 42140231 is 13204124.

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

It is not a de Polignac number, because 42140231 - 2⁶ = 42140167 is a prime.

It is a super-2 number, since 2×42140231² = 3551598137466722, 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 (42140237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7931 + ... + 12131.

It is an arithmetic number, because the mean of its divisors is an integer number (6025668).

Almost surely, 2^42140231 is an apocalyptic number.

42140231 is a deficient number, since it is larger than the sum of its proper divisors (6065113).

42140231 is a wasteful number, since it uses less digits than its factorization.

42140231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5641.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 42140231 is about 6491.5507392302. The cubic root of 42140231 is about 347.9890971834.

Adding to 42140231 its reverse (13204124), we get a palindrome (55344355).

The spelling of 42140231 in words is "forty-two million, one hundred forty thousand, two hundred thirty-one".