201421401 has 8 divisors (see below), whose sum is σ = 271072224. Its totient is φ = 133025760.

The previous prime is 201421393. The next prime is 201421403. The reversal of 201421401 is 104124102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201421401 - 2³ = 201421393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201421403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313420 + ... + 314061.

It is an arithmetic number, because the mean of its divisors is an integer number (33884028).

Almost surely, 2^201421401 is an apocalyptic number.

It is an amenable number.

201421401 is a deficient number, since it is larger than the sum of its proper divisors (69650823).

201421401 is a wasteful number, since it uses less digits than its factorization.

201421401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627591.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 201421401 is about 14192.3007648513. The cubic root of 201421401 is about 586.1856791028.

Adding to 201421401 its reverse (104124102), we get a palindrome (305545503).

The spelling of 201421401 in words is "two hundred one million, four hundred twenty-one thousand, four hundred one".