412921 has 4 divisors (see below), whose sum is σ = 419152. Its totient is φ = 406692.

The previous prime is 412903. The next prime is 412939. The reversal of 412921 is 129214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (412903) and next prime (412939).

It is a cyclic number.

It is not a de Polignac number, because 412921 - 2⁷ = 412793 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (412901) 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 3 ways as a sum of consecutive naturals, for example, 3015 + ... + 3148.

It is an arithmetic number, because the mean of its divisors is an integer number (104788).

2⁴¹²⁹²¹ is an apocalyptic number.

It is an amenable number.

412921 is a deficient number, since it is larger than the sum of its proper divisors (6231).

412921 is an equidigital number, since it uses as much as digits as its factorization.

412921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6230.

The product of its digits is 144, while the sum is 19.

The square root of 412921 is about 642.5892934060. The cubic root of 412921 is about 74.4655937699.

The spelling of 412921 in words is "four hundred twelve thousand, nine hundred twenty-one".