421057211 has 8 divisors (see below), whose sum is σ = 427374864. Its totient is φ = 414754560.

The previous prime is 421057181. The next prime is 421057213. The reversal of 421057211 is 112750124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421057211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421057213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61040 + ... + 67586.

It is an arithmetic number, because the mean of its divisors is an integer number (53421858).

Almost surely, 2^421057211 is an apocalyptic number.

421057211 is a deficient number, since it is larger than the sum of its proper divisors (6317653).

421057211 is an equidigital number, since it uses as much as digits as its factorization.

421057211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7501.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 421057211 is about 20519.6786280877. The cubic root of 421057211 is about 749.5150708221.

The spelling of 421057211 in words is "four hundred twenty-one million, fifty-seven thousand, two hundred eleven".