140500000 has 84 divisors (see below), whose sum is σ = 346987746. Its totient is φ = 56000000.

The previous prime is 140499943. The next prime is 140500007. The reversal of 140500000 is 5041.

It can be written as a sum of positive squares in 7 ways, for example, as 62283664 + 78216336 = 7892^2 + 8844^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 140500000.

It is not an unprimeable number, because it can be changed into a prime (140500007) 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 13 ways as a sum of consecutive naturals, for example, 499860 + ... + 500140.

Almost surely, 2^140500000 is an apocalyptic number.

140500000 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 140500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173493873).

140500000 is an abundant number, since it is smaller than the sum of its proper divisors (206487746).

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

140500000 is an frugal number, since it uses more digits than its factorization.

140500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 140500000 is about 11853.2695911297. The cubic root of 140500000 is about 519.8668298038.

Adding to 140500000 its reverse (5041), we get a palindrome (140505041).

The spelling of 140500000 in words is "one hundred forty million, five hundred thousand".