421396 has 12 divisors (see below), whose sum is σ = 780948. Its totient is φ = 198272.

The previous prime is 421381. The next prime is 421397. The reversal of 421396 is 693124.

421396 = T₃₅ + T₃₆ + ... + T₁₃₆.

421396 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 2 ways, for example, as 250000 + 171396 = 500^2 + 414^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 421396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421397) by changing a digit.

421396 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3031 + ... + 3166.

It is an arithmetic number, because the mean of its divisors is an integer number (65079).

2⁴²¹³⁹⁶ is an apocalyptic number.

It is an amenable number.

421396 is a deficient number, since it is larger than the sum of its proper divisors (359552).

421396 is a wasteful number, since it uses less digits than its factorization.

421396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6218 (or 6216 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 421396 is about 649.1502137410. The cubic root of 421396 is about 74.9716040651.

The spelling of 421396 in words is "four hundred twenty-one thousand, three hundred ninety-six".