142400203423 has 4 divisors (see below), whose sum is σ = 145086999768. Its totient is φ = 139713407080.

The previous prime is 142400203417. The next prime is 142400203427. The reversal of 142400203423 is 324302004241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324302004241 = 19 ⋅17068526539.

It is a cyclic number.

It is not a de Polignac number, because 142400203423 - 2²¹ = 142398106271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142400203427) 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, 1343398093 + ... + 1343398198.

It is an arithmetic number, because the mean of its divisors is an integer number (36271749942).

Almost surely, 2^142400203423 is an apocalyptic number.

142400203423 is a deficient number, since it is larger than the sum of its proper divisors (2686796345).

142400203423 is an equidigital number, since it uses as much as digits as its factorization.

142400203423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686796344.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 142400203423 its reverse (324302004241), we get a palindrome (466702207664).

The spelling of 142400203423 in words is "one hundred forty-two billion, four hundred million, two hundred three thousand, four hundred twenty-three".