201403020421 has 2 divisors, whose sum is σ = 201403020422. Its totient is φ = 201403020420.

The previous prime is 201403020407. The next prime is 201403020443. The reversal of 201403020421 is 124020304102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116263950625 + 85139069796 = 340975^2 + 291786^2 .

It is a cyclic number.

It is not a de Polignac number, because 201403020421 - 2¹¹ = 201403018373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201403020461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100701510210 + 100701510211.

It is an arithmetic number, because the mean of its divisors is an integer number (100701510211).

Almost surely, 2^201403020421 is an apocalyptic number.

It is an amenable number.

201403020421 is a deficient number, since it is larger than the sum of its proper divisors (1).

201403020421 is an equidigital number, since it uses as much as digits as its factorization.

201403020421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 201403020421 its reverse (124020304102), we get a palindrome (325423324523).

The spelling of 201403020421 in words is "two hundred one billion, four hundred three million, twenty thousand, four hundred twenty-one".