142889597538 has 32 divisors (see below), whose sum is σ = 288825014400. Its totient is φ = 47123099136.

The previous prime is 142889597533. The next prime is 142889597549. The reversal of 142889597538 is 835795988241.

It is a super-2 number, since 2×142889597538² (a number of 23 digits) contains 22 as substring.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 552498 + ... + 768786.

It is an arithmetic number, because the mean of its divisors is an integer number (9025781700).

Almost surely, 2^142889597538 is an apocalyptic number.

142889597538 is an abundant number, since it is smaller than the sum of its proper divisors (145935416862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142889597538 is a wasteful number, since it uses less digits than its factorization.

142889597538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217466.

The product of its digits is 174182400, while the sum is 69.

The spelling of 142889597538 in words is "one hundred forty-two billion, eight hundred eighty-nine million, five hundred ninety-seven thousand, five hundred thirty-eight".