12421401 has 8 divisors (see below), whose sum is σ = 16965984. Its totient is φ = 8078880.

The previous prime is 12421399. The next prime is 12421417. The reversal of 12421401 is 10412421.

12421401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12421401 - 2¹ = 12421399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12421481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50371 + ... + 50616.

It is an arithmetic number, because the mean of its divisors is an integer number (2120748).

Almost surely, 2^12421401 is an apocalyptic number.

It is an amenable number.

12421401 is a deficient number, since it is larger than the sum of its proper divisors (4544583).

12421401 is a wasteful number, since it uses less digits than its factorization.

12421401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101031.

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

The square root of 12421401 is about 3524.4008001361. The cubic root of 12421401 is about 231.5919862339.

Adding to 12421401 its reverse (10412421), we get a palindrome (22833822).

The spelling of 12421401 in words is "twelve million, four hundred twenty-one thousand, four hundred one".