342189187 has 4 divisors (see below), whose sum is σ = 349469856. Its totient is φ = 334908520.

The previous prime is 342189149. The next prime is 342189223. The reversal of 342189187 is 781981243.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 342189187 - 2⁷ = 342189059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342181187) 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, 3640264 + ... + 3640357.

It is an arithmetic number, because the mean of its divisors is an integer number (87367464).

Almost surely, 2^342189187 is an apocalyptic number.

342189187 is a deficient number, since it is larger than the sum of its proper divisors (7280669).

342189187 is an equidigital number, since it uses as much as digits as its factorization.

342189187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7280668.

The product of its digits is 96768, while the sum is 43.

The square root of 342189187 is about 18498.3563323880. The cubic root of 342189187 is about 699.4479913400.

The spelling of 342189187 in words is "three hundred forty-two million, one hundred eighty-nine thousand, one hundred eighty-seven".