6201421 has 8 divisors (see below), whose sum is σ = 6554880. Its totient is φ = 5854992.

The previous prime is 6201401. The next prime is 6201439. The reversal of 6201421 is 1241026.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6201421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6201395 and 6201404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6201401) 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, 111 + ... + 3523.

It is an arithmetic number, because the mean of its divisors is an integer number (819360).

Almost surely, 2^6201421 is an apocalyptic number.

It is an amenable number.

6201421 is a deficient number, since it is larger than the sum of its proper divisors (353459).

6201421 is a wasteful number, since it uses less digits than its factorization.

6201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3515.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 6201421 is about 2490.2652469165. The cubic root of 6201421 is about 183.7230889060.

Adding to 6201421 its reverse (1241026), we get a palindrome (7442447).

The spelling of 6201421 in words is "six million, two hundred one thousand, four hundred twenty-one".