140321500 has 96 divisors (see below), whose sum is σ = 345526272. Its totient is φ = 49320000.

The previous prime is 140321491. The next prime is 140321507. The reversal of 140321500 is 5123041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140321507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170089 + ... + 170911.

It is an arithmetic number, because the mean of its divisors is an integer number (3599232).

Almost surely, 2^140321500 is an apocalyptic number.

140321500 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 140321500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172763136).

140321500 is an abundant number, since it is smaller than the sum of its proper divisors (205204772).

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

140321500 is a wasteful number, since it uses less digits than its factorization.

140321500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 140321500 is about 11845.7376300507. The cubic root of 140321500 is about 519.6465793769.

Adding to 140321500 its reverse (5123041), we get a palindrome (145444541).

The spelling of 140321500 in words is "one hundred forty million, three hundred twenty-one thousand, five hundred".