421111206 has 24 divisors (see below), whose sum is σ = 913498560. Its totient is φ = 140202576.

The previous prime is 421111183. The next prime is 421111213. The reversal of 421111206 is 602111124.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1980 + ... + 29088.

It is an arithmetic number, because the mean of its divisors is an integer number (38062440).

Almost surely, 2^421111206 is an apocalyptic number.

421111206 is an abundant number, since it is smaller than the sum of its proper divisors (492387354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421111206 is a wasteful number, since it uses less digits than its factorization.

421111206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27980 (or 27977 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 421111206 is about 20520.9942741574. The cubic root of 421111206 is about 749.5471079067.

The spelling of 421111206 in words is "four hundred twenty-one million, one hundred eleven thousand, two hundred six".