140242143 has 8 divisors (see below), whose sum is σ = 189356800. Its totient is φ = 92311128.

The previous prime is 140242139. The next prime is 140242147. The reversal of 140242143 is 341242041.

It is an interprime number because it is at equal distance from previous prime (140242139) and next prime (140242147).

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

It is not a de Polignac number, because 140242143 - 2² = 140242139 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 (140242147) 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, 295633 + ... + 296106.

It is an arithmetic number, because the mean of its divisors is an integer number (23669600).

Almost surely, 2^140242143 is an apocalyptic number.

140242143 is a deficient number, since it is larger than the sum of its proper divisors (49114657).

140242143 is an equidigital number, since it uses as much as digits as its factorization.

140242143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591821.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 140242143 is about 11842.3875548810. The cubic root of 140242143 is about 519.5486011155.

Adding to 140242143 its reverse (341242041), we get a palindrome (481484184).

The spelling of 140242143 in words is "one hundred forty million, two hundred forty-two thousand, one hundred forty-three".