140120434423 has 8 divisors (see below), whose sum is σ = 146234352096. Its totient is φ = 134008327200.

The previous prime is 140120434387. The next prime is 140120434427. The reversal of 140120434423 is 324434021041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140120434423 is a prime.

It is a super-2 number, since 2×140120434423² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140120434391 and 140120434400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140120434427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293248 + ... + 605173.

It is an arithmetic number, because the mean of its divisors is an integer number (18279294012).

Almost surely, 2^140120434423 is an apocalyptic number.

140120434423 is a deficient number, since it is larger than the sum of its proper divisors (6113917673).

140120434423 is an equidigital number, since it uses as much as digits as its factorization.

140120434423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905225.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 140120434423 its reverse (324434021041), we get a palindrome (464554455464).

The spelling of 140120434423 in words is "one hundred forty billion, one hundred twenty million, four hundred thirty-four thousand, four hundred twenty-three".