140442443 has 2 divisors, whose sum is σ = 140442444. Its totient is φ = 140442442.

The previous prime is 140442413. The next prime is 140442451. The reversal of 140442443 is 344244041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140442443 - 2²⁰ = 139393867 is a prime.

It is a super-4 number, since 4×140442443⁴ (a number of 34 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (140442413) 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, 70221221 + 70221222.

It is an arithmetic number, because the mean of its divisors is an integer number (70221222).

Almost surely, 2^140442443 is an apocalyptic number.

140442443 is a deficient number, since it is larger than the sum of its proper divisors (1).

140442443 is an equidigital number, since it uses as much as digits as its factorization.

140442443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 140442443 is about 11850.8414469184. The cubic root of 140442443 is about 519.7958308430.

Adding to 140442443 its reverse (344244041), we get a palindrome (484686484).

The spelling of 140442443 in words is "one hundred forty million, four hundred forty-two thousand, four hundred forty-three".