421022413 has 4 divisors (see below), whose sum is σ = 481168480. Its totient is φ = 360876348.

The previous prime is 421022411. The next prime is 421022431. The reversal of 421022413 is 314220124.

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 not a de Polignac number, because 421022413 - 2¹ = 421022411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421022411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30073023 + ... + 30073036.

It is an arithmetic number, because the mean of its divisors is an integer number (120292120).

Almost surely, 2^421022413 is an apocalyptic number.

It is an amenable number.

421022413 is a deficient number, since it is larger than the sum of its proper divisors (60146067).

421022413 is an equidigital number, since it uses as much as digits as its factorization.

421022413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60146066.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 421022413 is about 20518.8306928051. The cubic root of 421022413 is about 749.4944225244.

Adding to 421022413 its reverse (314220124), we get a palindrome (735242537).

The spelling of 421022413 in words is "four hundred twenty-one million, twenty-two thousand, four hundred thirteen".