140420204121321 has 24 divisors (see below), whose sum is σ = 203288606224704. Its totient is φ = 93401467121760.

The previous prime is 140420204121287. The next prime is 140420204121371. The reversal of 140420204121321 is 123121402024041.

140420204121321 is a `hidden beast` number, since 1 + 4 + 0 + 420 + 2 + 0 + 4 + 1 + 213 + 21 = 666.

It is not a de Polignac number, because 140420204121321 - 2²⁹ = 140419667250409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140420204121371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41896930 + ... + 45124196.

It is an arithmetic number, because the mean of its divisors is an integer number (8470358592696).

Almost surely, 2^{140420204121321} is an apocalyptic number.

It is an amenable number.

140420204121321 is a deficient number, since it is larger than the sum of its proper divisors (62868402103383).

140420204121321 is a wasteful number, since it uses less digits than its factorization.

140420204121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238221 (or 3238218 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 140420204121321 its reverse (123121402024041), we get a palindrome (263541606145362).

The spelling of 140420204121321 in words is "one hundred forty trillion, four hundred twenty billion, two hundred four million, one hundred twenty-one thousand, three hundred twenty-one".