140220401204421 has 24 divisors (see below), whose sum is σ = 203320452582104. Its totient is φ = 93120487695360.

The previous prime is 140220401204381. The next prime is 140220401204479. The reversal of 140220401204421 is 124402104022041.

140220401204421 is a `hidden beast` number, since 1 + 4 + 0 + 2 + 204 + 0 + 12 + 0 + 442 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 68484396780900 + 71736004423521 = 8275530^2 + 8469711^2 .

It is not a de Polignac number, because 140220401204421 - 2⁶ = 140220401204357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140220401604421) 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, 3680481 + ... + 17146041.

Almost surely, 2^{140220401204421} is an apocalyptic number.

It is an amenable number.

140220401204421 is a deficient number, since it is larger than the sum of its proper divisors (63100051377683).

140220401204421 is a wasteful number, since it uses less digits than its factorization.

140220401204421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13470021 (or 13470018 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 140220401204421 its reverse (124402104022041), we get a palindrome (264622505226462).

The spelling of 140220401204421 in words is "one hundred forty trillion, two hundred twenty billion, four hundred one million, two hundred four thousand, four hundred twenty-one".