140300023 has 4 divisors (see below), whose sum is σ = 146400048. Its totient is φ = 134200000.

The previous prime is 140300011. The next prime is 140300071. The reversal of 140300023 is 320003041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140300023 is a prime.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140299976 and 140300012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140300003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3049978 + ... + 3050023.

It is an arithmetic number, because the mean of its divisors is an integer number (36600012).

Almost surely, 2^140300023 is an apocalyptic number.

140300023 is a deficient number, since it is larger than the sum of its proper divisors (6100025).

140300023 is an equidigital number, since it uses as much as digits as its factorization.

140300023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6100024.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 140300023 is about 11844.8310667565. The cubic root of 140300023 is about 519.6200664073.

Adding to 140300023 its reverse (320003041), we get a palindrome (460303064).

The spelling of 140300023 in words is "one hundred forty million, three hundred thousand, twenty-three".