142858189 has 4 divisors (see below), whose sum is σ = 144579456. Its totient is φ = 141136924.

The previous prime is 142858159. The next prime is 142858193. The reversal of 142858189 is 981858241.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 142858189 - 2⁷ = 142858061 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 (142858139) 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, 860509 + ... + 860674.

It is an arithmetic number, because the mean of its divisors is an integer number (36144864).

Almost surely, 2^142858189 is an apocalyptic number.

It is an amenable number.

142858189 is a deficient number, since it is larger than the sum of its proper divisors (1721267).

142858189 is an equidigital number, since it uses as much as digits as its factorization.

142858189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721266.

The product of its digits is 184320, while the sum is 46.

The square root of 142858189 is about 11952.3298565593. The cubic root of 142858189 is about 522.7592346238.

The spelling of 142858189 in words is "one hundred forty-two million, eight hundred fifty-eight thousand, one hundred eighty-nine".