439540142 has 8 divisors (see below), whose sum is σ = 664502016. Its totient is φ = 218039472.

The previous prime is 439540133. The next prime is 439540169. The reversal of 439540142 is 241045934.

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 = 439540099 and 439540108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864983 + ... + 865490.

It is an arithmetic number, because the mean of its divisors is an integer number (83062752).

Almost surely, 2^439540142 is an apocalyptic number.

439540142 is a deficient number, since it is larger than the sum of its proper divisors (224961874).

439540142 is a wasteful number, since it uses less digits than its factorization.

439540142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730602.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 439540142 is about 20965.2126628852. The cubic root of 439540142 is about 760.3254273469.

The spelling of 439540142 in words is "four hundred thirty-nine million, five hundred forty thousand, one hundred forty-two".