140321140 has 48 divisors (see below), whose sum is σ = 307676880. Its totient is φ = 53688320.

The previous prime is 140321089. The next prime is 140321177. The reversal of 140321140 is 41123041.

It can be written as a sum of positive squares in 8 ways, for example, as 1411344 + 138909796 = 1188^2 + 11786^2 .

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, 64470 + ... + 66610.

It is an arithmetic number, because the mean of its divisors is an integer number (6409935).

Almost surely, 2^140321140 is an apocalyptic number.

140321140 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 140321140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153838440).

140321140 is an abundant number, since it is smaller than the sum of its proper divisors (167355740).

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

140321140 is a wasteful number, since it uses less digits than its factorization.

140321140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292 (or 2290 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 140321140 is about 11845.7224347019. The cubic root of 140321140 is about 519.6461349857.

Adding to 140321140 its reverse (41123041), we get a palindrome (181444181).

The spelling of 140321140 in words is "one hundred forty million, three hundred twenty-one thousand, one hundred forty".