421122413 has 4 divisors (see below), whose sum is σ = 421803360. Its totient is φ = 420441468.

The previous prime is 421122391. The next prime is 421122421. The reversal of 421122413 is 314221124.

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 421122413 - 2¹² = 421118317 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 (421122313) 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, 339545 + ... + 340782.

It is an arithmetic number, because the mean of its divisors is an integer number (105450840).

Almost surely, 2^421122413 is an apocalyptic number.

It is an amenable number.

421122413 is a deficient number, since it is larger than the sum of its proper divisors (680947).

421122413 is an equidigital number, since it uses as much as digits as its factorization.

421122413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680946.

The product of its digits is 384, while the sum is 20.

The square root of 421122413 is about 20521.2673341585. The cubic root of 421122413 is about 749.5537570608.

Adding to 421122413 its reverse (314221124), we get a palindrome (735343537).

The spelling of 421122413 in words is "four hundred twenty-one million, one hundred twenty-two thousand, four hundred thirteen".