72142936423 has 2 divisors, whose sum is σ = 72142936424. Its totient is φ = 72142936422.

The previous prime is 72142936421. The next prime is 72142936451. The reversal of 72142936423 is 32463924127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72142936423 - 2¹ = 72142936421 is a prime.

Together with 72142936421, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 72142936423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72142936421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36071468211 + 36071468212.

It is an arithmetic number, because the mean of its divisors is an integer number (36071468212).

Almost surely, 2^72142936423 is an apocalyptic number.

72142936423 is a deficient number, since it is larger than the sum of its proper divisors (1).

72142936423 is an equidigital number, since it uses as much as digits as its factorization.

72142936423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 43.

The spelling of 72142936423 in words is "seventy-two billion, one hundred forty-two million, nine hundred thirty-six thousand, four hundred twenty-three".