421130421 has 48 divisors (see below), whose sum is σ = 676952640. Its totient is φ = 260807040.

The previous prime is 421130401. The next prime is 421130429. The reversal of 421130421 is 124031124.

421130421 is a `hidden beast` number, since 4 + 211 + 30 + 421 = 666.

It is not a de Polignac number, because 421130421 - 2¹¹ = 421128373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421130394 and 421130403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421130429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 243841 + ... + 245561.

It is an arithmetic number, because the mean of its divisors is an integer number (14103180).

Almost surely, 2^421130421 is an apocalyptic number.

It is an amenable number.

421130421 is a deficient number, since it is larger than the sum of its proper divisors (255822219).

421130421 is a wasteful number, since it uses less digits than its factorization.

421130421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808 (or 1796 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 421130421 is about 20521.4624478861. The cubic root of 421130421 is about 749.5585081643.

Adding to 421130421 its reverse (124031124), we get a palindrome (545161545).

The spelling of 421130421 in words is "four hundred twenty-one million, one hundred thirty thousand, four hundred twenty-one".