140323142 has 4 divisors (see below), whose sum is σ = 210484716. Its totient is φ = 70161570.

The previous prime is 140323123. The next prime is 140323217. The reversal of 140323142 is 241323041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241323041 = 17 ⋅14195473.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35080784 + ... + 35080787.

It is an arithmetic number, because the mean of its divisors is an integer number (52621179).

Almost surely, 2^140323142 is an apocalyptic number.

140323142 is a deficient number, since it is larger than the sum of its proper divisors (70161574).

140323142 is an equidigital number, since it uses as much as digits as its factorization.

140323142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70161573.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 140323142 is about 11845.8069374779. The cubic root of 140323142 is about 519.6486062850.

Adding to 140323142 its reverse (241323041), we get a palindrome (381646183).

The spelling of 140323142 in words is "one hundred forty million, three hundred twenty-three thousand, one hundred forty-two".