140021421200 has 30 divisors (see below), whose sum is σ = 336401465394. Its totient is φ = 56008568320.

The previous prime is 140021421157. The next prime is 140021421223. The reversal of 140021421200 is 2124120041.

It can be written as a sum of positive squares in 3 ways, for example, as 27973231504 + 112048189696 = 167252^2 + 334736^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175026377 + ... + 175027176.

Almost surely, 2^140021421200 is an apocalyptic number.

140021421200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140021421200 is an abundant number, since it is smaller than the sum of its proper divisors (196380044194).

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

140021421200 is a wasteful number, since it uses less digits than its factorization.

140021421200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350053571 (or 350053560 counting only the distinct ones).

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

Adding to 140021421200 its reverse (2124120041), we get a palindrome (142145541241).

The spelling of 140021421200 in words is "one hundred forty billion, twenty-one million, four hundred twenty-one thousand, two hundred".