140742142 has 4 divisors (see below), whose sum is σ = 211113216. Its totient is φ = 70371070.

The previous prime is 140742137. The next prime is 140742163. The reversal of 140742142 is 241247041.

It is a semiprime because it is the product of two primes.

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, 35185534 + ... + 35185537.

It is an arithmetic number, because the mean of its divisors is an integer number (52778304).

Almost surely, 2^140742142 is an apocalyptic number.

140742142 is a deficient number, since it is larger than the sum of its proper divisors (70371074).

140742142 is an equidigital number, since it uses as much as digits as its factorization.

140742142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70371073.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 140742142 is about 11863.4793378671. The cubic root of 140742142 is about 520.1653098679.

Adding to 140742142 its reverse (241247041), we get a palindrome (381989183).

The spelling of 140742142 in words is "one hundred forty million, seven hundred forty-two thousand, one hundred forty-two".