140442344242 has 4 divisors (see below), whose sum is σ = 210663516366. Its totient is φ = 70221172120.

The previous prime is 140442344173. The next prime is 140442344249. The reversal of 140442344242 is 242443244041.

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

It can be written as a sum of positive squares in only one way, i.e., 101991448321 + 38450895921 = 319361^2 + 196089^2 .

It is a junction number, because it is equal to n+sod(n) for n = 140442344198 and 140442344207.

It is not an unprimeable number, because it can be changed into a prime (140442344249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35110586059 + ... + 35110586062.

Almost surely, 2^140442344242 is an apocalyptic number.

140442344242 is a deficient number, since it is larger than the sum of its proper divisors (70221172124).

140442344242 is an equidigital number, since it uses as much as digits as its factorization.

140442344242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70221172123.

The product of its (nonzero) digits is 98304, while the sum is 34.

Adding to 140442344242 its reverse (242443244041), we get a palindrome (382885588283).

The spelling of 140442344242 in words is "one hundred forty billion, four hundred forty-two million, three hundred forty-four thousand, two hundred forty-two".