140021421201 has 30 divisors (see below), whose sum is σ = 216629303462. Its totient is φ = 90128687040.

The previous prime is 140021421157. The next prime is 140021421223. The reversal of 140021421201 is 102124120041.

140021421201 is a `hidden beast` number, since 1 + 40 + 0 + 2 + 1 + 421 + 201 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 43672640400 + 96348780801 = 208980^2 + 310401^2 .

It is not a de Polignac number, because 140021421201 - 2⁷ = 140021421073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140021421251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 959620 + ... + 1095861.

Almost surely, 2^140021421201 is an apocalyptic number.

It is an amenable number.

140021421201 is a deficient number, since it is larger than the sum of its proper divisors (76607882261).

140021421201 is an equidigital number, since it uses as much as digits as its factorization.

140021421201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055551 (or 2055513 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 140021421201 its reverse (102124120041), we get a palindrome (242145541242).

The spelling of 140021421201 in words is "one hundred forty billion, twenty-one million, four hundred twenty-one thousand, two hundred one".