421032121 has 8 divisors (see below), whose sum is σ = 436057920. Its totient is φ = 406040208.

The previous prime is 421032091. The next prime is 421032127. The reversal of 421032121 is 121230124.

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

It is a cyclic number.

It is not a de Polignac number, because 421032121 - 2⁹ = 421031609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421032095 and 421032104.

It is not an unprimeable number, because it can be changed into a prime (421032127) 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, 18300 + ... + 34306.

It is an arithmetic number, because the mean of its divisors is an integer number (54507240).

Almost surely, 2^421032121 is an apocalyptic number.

It is an amenable number.

421032121 is a deficient number, since it is larger than the sum of its proper divisors (15025799).

421032121 is a wasteful number, since it uses less digits than its factorization.

421032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16943.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 421032121 is about 20519.0672546293. The cubic root of 421032121 is about 749.5001831329.

Adding to 421032121 its reverse (121230124), we get a palindrome (542262245).

The spelling of 421032121 in words is "four hundred twenty-one million, thirty-two thousand, one hundred twenty-one".