140840000 has 140 divisors (see below), whose sum is σ = 399921984. Its totient is φ = 48192000.

The previous prime is 140839991. The next prime is 140840039. The reversal of 140840000 is 48041.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (140).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 279749 + ... + 280251.

Almost surely, 2^140840000 is an apocalyptic number.

140840000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199960992).

140840000 is an abundant number, since it is smaller than the sum of its proper divisors (259081984).

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

140840000 is an frugal number, since it uses more digits than its factorization.

140840000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 140840000 is about 11867.6029593174. The cubic root of 140840000 is about 520.2858389036.

Adding to 140840000 its reverse (48041), we get a palindrome (140888041).

The spelling of 140840000 in words is "one hundred forty million, eight hundred forty thousand".