421130051 has 4 divisors (see below), whose sum is σ = 421196400. Its totient is φ = 421063704.

The previous prime is 421130033. The next prime is 421130063. The reversal of 421130051 is 150031124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421130051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421130081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22511 + ... + 36728.

It is an arithmetic number, because the mean of its divisors is an integer number (105299100).

Almost surely, 2^421130051 is an apocalyptic number.

421130051 is a deficient number, since it is larger than the sum of its proper divisors (66349).

421130051 is an equidigital number, since it uses as much as digits as its factorization.

421130051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66348.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 421130051 is about 20521.4534329321. The cubic root of 421130051 is about 749.5582886466.

Adding to 421130051 its reverse (150031124), we get a palindrome (571161175).

The spelling of 421130051 in words is "four hundred twenty-one million, one hundred thirty thousand, fifty-one".