140142823 has 2 divisors, whose sum is σ = 140142824. Its totient is φ = 140142822.

The previous prime is 140142809. The next prime is 140142829. The reversal of 140142823 is 328241041.

140142823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140142823 - 2⁹ = 140142311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140142829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70071411 + 70071412.

It is an arithmetic number, because the mean of its divisors is an integer number (70071412).

Almost surely, 2^140142823 is an apocalyptic number.

140142823 is a deficient number, since it is larger than the sum of its proper divisors (1).

140142823 is an equidigital number, since it uses as much as digits as its factorization.

140142823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 140142823 is about 11838.1934010220. The cubic root of 140142823 is about 519.4259234091.

Adding to 140142823 its reverse (328241041), we get a palindrome (468383864).

The spelling of 140142823 in words is "one hundred forty million, one hundred forty-two thousand, eight hundred twenty-three".