142854887989 has 12 divisors (see below), whose sum is σ = 158786622540. Its totient is φ = 128408878400.

The previous prime is 142854887963. The next prime is 142854887999. The reversal of 142854887989 is 989788458241.

It can be written as a sum of positive squares in 2 ways, for example, as 24388131889 + 118466756100 = 156167^2 + 344190^2 .

It is not a de Polignac number, because 142854887989 - 2¹¹ = 142854885941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142854887939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6621922 + ... + 6643459.

It is an arithmetic number, because the mean of its divisors is an integer number (13232218545).

Almost surely, 2^142854887989 is an apocalyptic number.

It is an amenable number.

142854887989 is a deficient number, since it is larger than the sum of its proper divisors (15931734551).

142854887989 is a wasteful number, since it uses less digits than its factorization.

142854887989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13265492 (or 13265481 counting only the distinct ones).

The product of its digits is 371589120, while the sum is 73.

The spelling of 142854887989 in words is "one hundred forty-two billion, eight hundred fifty-four million, eight hundred eighty-seven thousand, nine hundred eighty-nine".