421145111 has 8 divisors (see below), whose sum is σ = 441083904. Its totient is φ = 401342040.

The previous prime is 421145083. The next prime is 421145113. The reversal of 421145111 is 111541124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421145111 - 2¹⁴ = 421128727 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 (421145113) 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 7 ways as a sum of consecutive naturals, for example, 27551 + ... + 40016.

It is an arithmetic number, because the mean of its divisors is an integer number (55135488).

Almost surely, 2^421145111 is an apocalyptic number.

421145111 is a deficient number, since it is larger than the sum of its proper divisors (19938793).

421145111 is a wasteful number, since it uses less digits than its factorization.

421145111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67861.

The product of its digits is 160, while the sum is 20.

The square root of 421145111 is about 20521.8203627261. The cubic root of 421145111 is about 749.5672235059.

Adding to 421145111 its reverse (111541124), we get a palindrome (532686235).

The spelling of 421145111 in words is "four hundred twenty-one million, one hundred forty-five thousand, one hundred eleven".