142889597539 has 4 divisors (see below), whose sum is σ = 153881105056. Its totient is φ = 131898090024.

The previous prime is 142889597533. The next prime is 142889597549. The reversal of 142889597539 is 935795988241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 935795988241 = 14591 ⋅64135151.

It is a cyclic number.

It is not a de Polignac number, because 142889597539 - 2²⁹ = 142352726627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142889597533) 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, 5495753739 + ... + 5495753764.

It is an arithmetic number, because the mean of its divisors is an integer number (38470276264).

Almost surely, 2^142889597539 is an apocalyptic number.

142889597539 is a deficient number, since it is larger than the sum of its proper divisors (10991507517).

142889597539 is a wasteful number, since it uses less digits than its factorization.

142889597539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10991507516.

The product of its digits is 195955200, while the sum is 70.

The spelling of 142889597539 in words is "one hundred forty-two billion, eight hundred eighty-nine million, five hundred ninety-seven thousand, five hundred thirty-nine".