181680342 has 8 divisors (see below), whose sum is σ = 363360696. Its totient is φ = 60560112.

The previous prime is 181680341. The next prime is 181680347. The reversal of 181680342 is 243086181.

181680342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

181680342 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181680341) 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, 15140023 + ... + 15140034.

It is an arithmetic number, because the mean of its divisors is an integer number (45420087).

Almost surely, 2^181680342 is an apocalyptic number.

181680342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

181680342 is a wasteful number, since it uses less digits than its factorization.

181680342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30280062.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 181680342 is about 13478.8850429106. The cubic root of 181680342 is about 566.3731364837.

The spelling of 181680342 in words is "one hundred eighty-one million, six hundred eighty thousand, three hundred forty-two".