421320111 has 4 divisors (see below), whose sum is σ = 561760152. Its totient is φ = 280880072.

The previous prime is 421320103. The next prime is 421320127. The reversal of 421320111 is 111023124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421320111 - 2³ = 421320103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421320131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70220016 + ... + 70220021.

It is an arithmetic number, because the mean of its divisors is an integer number (140440038).

Almost surely, 2^421320111 is an apocalyptic number.

421320111 is a deficient number, since it is larger than the sum of its proper divisors (140440041).

421320111 is a wasteful number, since it uses less digits than its factorization.

421320111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140440040.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 421320111 is about 20526.0836741937. The cubic root of 421320111 is about 749.6710326173.

Adding to 421320111 its reverse (111023124), we get a palindrome (532343235).

The spelling of 421320111 in words is "four hundred twenty-one million, three hundred twenty thousand, one hundred eleven".