140320427 has 16 divisors (see below), whose sum is σ = 155312640. Its totient is φ = 125964192.

The previous prime is 140320421. The next prime is 140320429. The reversal of 140320427 is 724023041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140320427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140320421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108728 + ... + 110010.

It is an arithmetic number, because the mean of its divisors is an integer number (9707040).

Almost surely, 2^140320427 is an apocalyptic number.

140320427 is a deficient number, since it is larger than the sum of its proper divisors (14992213).

140320427 is a wasteful number, since it uses less digits than its factorization.

140320427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 140320427 is about 11845.6923394118. The cubic root of 140320427 is about 519.6452548420.

Adding to 140320427 its reverse (724023041), we get a palindrome (864343468).

The spelling of 140320427 in words is "one hundred forty million, three hundred twenty thousand, four hundred twenty-seven".