142985089 has 16 divisors (see below), whose sum is σ = 169142400. Its totient is φ = 119598336.

The previous prime is 142985053. The next prime is 142985093. The reversal of 142985089 is 980589241.

It is not a de Polignac number, because 142985089 - 2²¹ = 140887937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142985039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6904 + ... + 18265.

It is an arithmetic number, because the mean of its divisors is an integer number (10571400).

Almost surely, 2^142985089 is an apocalyptic number.

142985089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

142985089 is a deficient number, since it is larger than the sum of its proper divisors (26157311).

142985089 is a wasteful number, since it uses less digits than its factorization.

142985089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25224.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 142985089 is about 11957.6372666175. The cubic root of 142985089 is about 522.9139766899.

The spelling of 142985089 in words is "one hundred forty-two million, nine hundred eighty-five thousand, eighty-nine".