140144423 has 2 divisors, whose sum is σ = 140144424. Its totient is φ = 140144422.

The previous prime is 140144401. The next prime is 140144429. The reversal of 140144423 is 324441041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140144423 - 2²² = 135950119 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140144429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70072211 + 70072212.

It is an arithmetic number, because the mean of its divisors is an integer number (70072212).

Almost surely, 2^140144423 is an apocalyptic number.

140144423 is a deficient number, since it is larger than the sum of its proper divisors (1).

140144423 is an equidigital number, since it uses as much as digits as its factorization.

140144423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 140144423 is about 11838.2609787080. The cubic root of 140144423 is about 519.4279001504.

Adding to 140144423 its reverse (324441041), we get a palindrome (464585464).

The spelling of 140144423 in words is "one hundred forty million, one hundred forty-four thousand, four hundred twenty-three".