421394 has 8 divisors (see below), whose sum is σ = 638220. Its totient is φ = 208656.

The previous prime is 421381. The next prime is 421397. The reversal of 421394 is 493124.

It can be written as a sum of positive squares in 2 ways, for example, as 405769 + 15625 = 637^2 + 125^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 421394.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749 + ... + 1184.

2⁴²¹³⁹⁴ is an apocalyptic number.

421394 is a deficient number, since it is larger than the sum of its proper divisors (216826).

421394 is a wasteful number, since it uses less digits than its factorization.

421394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044.

The product of its digits is 864, while the sum is 23.

The square root of 421394 is about 649.1486732637. The cubic root of 421394 is about 74.9714854566.

The spelling of 421394 in words is "four hundred twenty-one thousand, three hundred ninety-four".