140839146 has 48 divisors (see below), whose sum is σ = 353184000. Its totient is φ = 39727584.

The previous prime is 140839133. The next prime is 140839157. The reversal of 140839146 is 641938041.

It is a self number, because there is not a number n which added to its sum of digits gives 140839146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2880 + ... + 17028.

It is an arithmetic number, because the mean of its divisors is an integer number (7358000).

Almost surely, 2^140839146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140839146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176592000).

140839146 is an abundant number, since it is smaller than the sum of its proper divisors (212344854).

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

140839146 is a wasteful number, since it uses less digits than its factorization.

140839146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14243 (or 14240 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 140839146 is about 11867.5669789557. The cubic root of 140839146 is about 520.2847872966.

The spelling of 140839146 in words is "one hundred forty million, eight hundred thirty-nine thousand, one hundred forty-six".