142027996809 has 4 divisors (see below), whose sum is σ = 189370662416. Its totient is φ = 94685331204.

The previous prime is 142027996807. The next prime is 142027996861. The reversal of 142027996809 is 908699720241.

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 not a de Polignac number, because 142027996809 - 2¹ = 142027996807 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142027996807) 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, 23671332799 + ... + 23671332804.

It is an arithmetic number, because the mean of its divisors is an integer number (47342665604).

Almost surely, 2^142027996809 is an apocalyptic number.

It is an amenable number.

142027996809 is a deficient number, since it is larger than the sum of its proper divisors (47342665607).

142027996809 is an equidigital number, since it uses as much as digits as its factorization.

142027996809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47342665606.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 142027996809 in words is "one hundred forty-two billion, twenty-seven million, nine hundred ninety-six thousand, eight hundred nine".