201421423401 has 32 divisors (see below), whose sum is σ = 303294566400. Its totient is φ = 117797025600.

The previous prime is 201421423373. The next prime is 201421423421. The reversal of 201421423401 is 104324124102.

201421423401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201421423401 - 2⁶ = 201421423337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201421423421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74946 + ... + 639108.

It is an arithmetic number, because the mean of its divisors is an integer number (9477955200).

Almost surely, 2^201421423401 is an apocalyptic number.

It is an amenable number.

201421423401 is a deficient number, since it is larger than the sum of its proper divisors (101873142999).

201421423401 is a wasteful number, since it uses less digits than its factorization.

201421423401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564557.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 201421423401 its reverse (104324124102), we get a palindrome (305745547503).

The spelling of 201421423401 in words is "two hundred one billion, four hundred twenty-one million, four hundred twenty-three thousand, four hundred one".