140940823 has 2 divisors, whose sum is σ = 140940824. Its totient is φ = 140940822.

The previous prime is 140940817. The next prime is 140940847. The reversal of 140940823 is 328049041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140940823 - 2¹⁷ = 140809751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140940853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70470411 + 70470412.

It is an arithmetic number, because the mean of its divisors is an integer number (70470412).

Almost surely, 2^140940823 is an apocalyptic number.

140940823 is a deficient number, since it is larger than the sum of its proper divisors (1).

140940823 is an equidigital number, since it uses as much as digits as its factorization.

140940823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 140940823 is about 11871.8500243222. The cubic root of 140940823 is about 520.4099614699.

Adding to 140940823 its reverse (328049041), we get a palindrome (468989864).

The spelling of 140940823 in words is "one hundred forty million, nine hundred forty thousand, eight hundred twenty-three".