489840142 has 32 divisors (see below), whose sum is σ = 850888800. Its totient is φ = 209018880.

The previous prime is 489840139. The next prime is 489840163. The reversal of 489840142 is 241048984.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 489840095 and 489840104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166468 + ... + 169384.

It is an arithmetic number, because the mean of its divisors is an integer number (26590275).

Almost surely, 2^489840142 is an apocalyptic number.

489840142 is a deficient number, since it is larger than the sum of its proper divisors (361048658).

489840142 is a wasteful number, since it uses less digits than its factorization.

489840142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 489840142 is about 22132.3325024725. The cubic root of 489840142 is about 788.2877737791.

The spelling of 489840142 in words is "four hundred eighty-nine million, eight hundred forty thousand, one hundred forty-two".