180639142 has 8 divisors (see below), whose sum is σ = 276723936. Its totient is φ = 88397832.

The previous prime is 180639133. The next prime is 180639187. The reversal of 180639142 is 241936081.

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

It is a junction number, because it is equal to n+sod(n) for n = 180639098 and 180639107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960753 + ... + 960940.

It is an arithmetic number, because the mean of its divisors is an integer number (34590492).

Almost surely, 2^180639142 is an apocalyptic number.

180639142 is a deficient number, since it is larger than the sum of its proper divisors (96084794).

180639142 is a wasteful number, since it uses less digits than its factorization.

180639142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921742.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 180639142 is about 13440.2061740138. The cubic root of 180639142 is about 565.2891119618.

The spelling of 180639142 in words is "one hundred eighty million, six hundred thirty-nine thousand, one hundred forty-two".