140123231243 has 4 divisors (see below), whose sum is σ = 140199761328. Its totient is φ = 140046701160.

The previous prime is 140123231219. The next prime is 140123231257. The reversal of 140123231243 is 342132321041.

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

It is a cyclic number.

It is not a de Polignac number, because 140123231243 - 2¹² = 140123227147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140123231273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38262296 + ... + 38265957.

It is an arithmetic number, because the mean of its divisors is an integer number (35049940332).

Almost surely, 2^140123231243 is an apocalyptic number.

140123231243 is a deficient number, since it is larger than the sum of its proper divisors (76530085).

140123231243 is an equidigital number, since it uses as much as digits as its factorization.

140123231243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76530084.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 140123231243 its reverse (342132321041), we get a palindrome (482255552284).

The spelling of 140123231243 in words is "one hundred forty billion, one hundred twenty-three million, two hundred thirty-one thousand, two hundred forty-three".