140442229 has 2 divisors, whose sum is σ = 140442230. Its totient is φ = 140442228.

The previous prime is 140442223. The next prime is 140442241. The reversal of 140442229 is 922244041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134792100 + 5650129 = 11610^2 + 2377^2 .

It is a cyclic number.

It is not a de Polignac number, because 140442229 - 2³ = 140442221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140442197 and 140442206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140442221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70221114 + 70221115.

It is an arithmetic number, because the mean of its divisors is an integer number (70221115).

Almost surely, 2^140442229 is an apocalyptic number.

It is an amenable number.

140442229 is a deficient number, since it is larger than the sum of its proper divisors (1).

140442229 is an equidigital number, since it uses as much as digits as its factorization.

140442229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 140442229 is about 11850.8324180203. The cubic root of 140442229 is about 519.7955668289.

The spelling of 140442229 in words is "one hundred forty million, four hundred forty-two thousand, two hundred twenty-nine".