421410443 has 8 divisors (see below), whose sum is σ = 443781120. Its totient is φ = 399058920.

The previous prime is 421410421. The next prime is 421410463. The reversal of 421410443 is 344014124.

It is a happy number.

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 421410443 - 2¹² = 421406347 is a prime.

It is a super-2 number, since 2×421410443² = 355173522938912498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421410463) 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, 72578 + ... + 78168.

It is an arithmetic number, because the mean of its divisors is an integer number (55472640).

Almost surely, 2^421410443 is an apocalyptic number.

421410443 is a deficient number, since it is larger than the sum of its proper divisors (22370677).

421410443 is a wasteful number, since it uses less digits than its factorization.

421410443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9577.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 421410443 is about 20528.2839760171. The cubic root of 421410443 is about 749.7246058528.

Adding to 421410443 its reverse (344014124), we get a palindrome (765424567).

The spelling of 421410443 in words is "four hundred twenty-one million, four hundred ten thousand, four hundred forty-three".