142864393729 has 4 divisors (see below), whose sum is σ = 143612375040. Its totient is φ = 142116412420.

The previous prime is 142864393681. The next prime is 142864393733. The reversal of 142864393729 is 927393468241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142864393729 is a prime.

It is a Smith number, since the sum of its digits (58) 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 not an unprimeable number, because it can be changed into a prime (142864393759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373990369 + ... + 373990750.

It is an arithmetic number, because the mean of its divisors is an integer number (35903093760).

Almost surely, 2^142864393729 is an apocalyptic number.

It is an amenable number.

142864393729 is a deficient number, since it is larger than the sum of its proper divisors (747981311).

142864393729 is an equidigital number, since it uses as much as digits as its factorization.

142864393729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747981310.

The product of its digits is 15676416, while the sum is 58.

The spelling of 142864393729 in words is "one hundred forty-two billion, eight hundred sixty-four million, three hundred ninety-three thousand, seven hundred twenty-nine".