415421 has 4 divisors (see below), whose sum is σ = 421344. Its totient is φ = 409500.

The previous prime is 415409. The next prime is 415427. The reversal of 415421 is 124514.

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 a cyclic number.

It is not a de Polignac number, because 415421 - 2¹⁰ = 414397 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 415421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415427) 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, 2855 + ... + 2996.

It is an arithmetic number, because the mean of its divisors is an integer number (105336).

2⁴¹⁵⁴²¹ is an apocalyptic number.

It is an amenable number.

415421 is a deficient number, since it is larger than the sum of its proper divisors (5923).

415421 is an equidigital number, since it uses as much as digits as its factorization.

415421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922.

The product of its digits is 160, while the sum is 17.

The square root of 415421 is about 644.5316128787. The cubic root of 415421 is about 74.6155736592.

Adding to 415421 its reverse (124514), we get a palindrome (539935).

The spelling of 415421 in words is "four hundred fifteen thousand, four hundred twenty-one".