140143142 has 8 divisors (see below), whose sum is σ = 211626000. Its totient is φ = 69601144.

The previous prime is 140143141. The next prime is 140143151. The reversal of 140143142 is 241341041.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140143141) 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, 234842 + ... + 235437.

It is an arithmetic number, because the mean of its divisors is an integer number (26453250).

Almost surely, 2^140143142 is an apocalyptic number.

140143142 is a deficient number, since it is larger than the sum of its proper divisors (71482858).

140143142 is a wasteful number, since it uses less digits than its factorization.

140143142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470430.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 140143142 is about 11838.2068743539. The cubic root of 140143142 is about 519.4263175231.

Adding to 140143142 its reverse (241341041), we get a palindrome (381484183).

The spelling of 140143142 in words is "one hundred forty million, one hundred forty-three thousand, one hundred forty-two".