201402304021 has 4 divisors (see below), whose sum is σ = 202851241600. Its totient is φ = 199953366444.

The previous prime is 201402304009. The next prime is 201402304031. The reversal of 201402304021 is 120403204102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201402304021 - 2²³ = 201393915413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201402304021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201402304031) 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 3 ways as a sum of consecutive naturals, for example, 724468581 + ... + 724468858.

It is an arithmetic number, because the mean of its divisors is an integer number (50712810400).

Almost surely, 2^201402304021 is an apocalyptic number.

It is an amenable number.

201402304021 is a deficient number, since it is larger than the sum of its proper divisors (1448937579).

201402304021 is a wasteful number, since it uses less digits than its factorization.

201402304021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448937578.

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

Adding to 201402304021 its reverse (120403204102), we get a palindrome (321805508123).

The spelling of 201402304021 in words is "two hundred one billion, four hundred two million, three hundred four thousand, twenty-one".