140442322 has 4 divisors (see below), whose sum is σ = 210663486. Its totient is φ = 70221160.

The previous prime is 140442299. The next prime is 140442359. The reversal of 140442322 is 223244041.

It is a happy number.

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., 99980001 + 40462321 = 9999^2 + 6361^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 140442293 and 140442302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35110579 + ... + 35110582.

Almost surely, 2^140442322 is an apocalyptic number.

140442322 is a deficient number, since it is larger than the sum of its proper divisors (70221164).

140442322 is an equidigital number, since it uses as much as digits as its factorization.

140442322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70221163.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 140442322 is about 11850.8363417946. The cubic root of 140442322 is about 519.7956815640.

Adding to 140442322 its reverse (223244041), we get a palindrome (363686363).

The spelling of 140442322 in words is "one hundred forty million, four hundred forty-two thousand, three hundred twenty-two".