140020000 has 60 divisors (see below), whose sum is σ = 344519406. Its totient is φ = 56000000.

The previous prime is 140019967. The next prime is 140020061. The reversal of 140020000 is 20041.

It can be written as a sum of positive squares in 5 ways, for example, as 685584 + 139334416 = 828^2 + 11804^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16500 + ... + 23500.

Almost surely, 2^140020000 is an apocalyptic number.

140020000 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 140020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172259703).

140020000 is an abundant number, since it is smaller than the sum of its proper divisors (204499406).

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

140020000 is an frugal number, since it uses more digits than its factorization.

140020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7031 (or 7008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 140020000 is about 11833.0046902720. The cubic root of 140020000 is about 519.2741351702.

Adding to 140020000 its reverse (20041), we get a palindrome (140040041).

The spelling of 140020000 in words is "one hundred forty million, twenty thousand".