421155111 has 8 divisors (see below), whose sum is σ = 604735600. Its totient is φ = 259172352.

The previous prime is 421155101. The next prime is 421155131. The reversal of 421155111 is 111551124.

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

It is not a de Polignac number, because 421155111 - 2⁵ = 421155079 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 (421155101) 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, 5399386 + ... + 5399463.

It is an arithmetic number, because the mean of its divisors is an integer number (75591950).

Almost surely, 2^421155111 is an apocalyptic number.

421155111 is a deficient number, since it is larger than the sum of its proper divisors (183580489).

421155111 is a wasteful number, since it uses less digits than its factorization.

421155111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10798865.

The product of its digits is 200, while the sum is 21.

The square root of 421155111 is about 20522.0640043832. The cubic root of 421155111 is about 749.5731562297.

The spelling of 421155111 in words is "four hundred twenty-one million, one hundred fifty-five thousand, one hundred eleven".