140323427 has 2 divisors, whose sum is σ = 140323428. Its totient is φ = 140323426.

The previous prime is 140323399. The next prime is 140323429. The reversal of 140323427 is 724323041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140323427 - 2²⁰ = 139274851 is a prime.

Together with 140323429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140323396 and 140323405.

It is not a weakly prime, because it can be changed into another prime (140323429) 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, 70161713 + 70161714.

It is an arithmetic number, because the mean of its divisors is an integer number (70161714).

Almost surely, 2^140323427 is an apocalyptic number.

140323427 is a deficient number, since it is larger than the sum of its proper divisors (1).

140323427 is an equidigital number, since it uses as much as digits as its factorization.

140323427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 140323427 is about 11845.8189670449. The cubic root of 140323427 is about 519.6489580915.

Adding to 140323427 its reverse (724323041), we get a palindrome (864646468).

The spelling of 140323427 in words is "one hundred forty million, three hundred twenty-three thousand, four hundred twenty-seven".