421421241 has 4 divisors (see below), whose sum is σ = 561894992. Its totient is φ = 280947492.

The previous prime is 421421239. The next prime is 421421251. The reversal of 421421241 is 142124124.

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 421421241 - 2¹ = 421421239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421421201) 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, 70236871 + ... + 70236876.

It is an arithmetic number, because the mean of its divisors is an integer number (140473748).

Almost surely, 2^421421241 is an apocalyptic number.

It is an amenable number.

421421241 is a deficient number, since it is larger than the sum of its proper divisors (140473751).

421421241 is a wasteful number, since it uses less digits than its factorization.

421421241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140473750.

The product of its digits is 512, while the sum is 21.

The square root of 421421241 is about 20528.5469773192. The cubic root of 421421241 is about 749.7310093147.

Adding to 421421241 its reverse (142124124), we get a palindrome (563545365).

The spelling of 421421241 in words is "four hundred twenty-one million, four hundred twenty-one thousand, two hundred forty-one".