421401 has 8 divisors (see below), whose sum is σ = 591520. Its totient is φ = 266112.

The previous prime is 421397. The next prime is 421409. The reversal of 421401 is 104124.

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

It is not a de Polignac number, because 421401 - 2² = 421397 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 421401.

It is not an unprimeable number, because it can be changed into a prime (421409) 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, 3640 + ... + 3753.

It is an arithmetic number, because the mean of its divisors is an integer number (73940).

2⁴²¹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

421401 is a deficient number, since it is larger than the sum of its proper divisors (170119).

421401 is a wasteful number, since it uses less digits than its factorization.

421401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7415.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 421401 is about 649.1540649183. The cubic root of 421401 is about 74.9719005847.

Adding to 421401 its reverse (104124), we get a palindrome (525525).

The spelling of 421401 in words is "four hundred twenty-one thousand, four hundred one", and thus it is an iban number.