421322430 has 16 divisors (see below), whose sum is σ = 1011173904. Its totient is φ = 112352640.

The previous prime is 421322417. The next prime is 421322443. The reversal of 421322430 is 34223124.

It is an interprime number because it is at equal distance from previous prime (421322417) and next prime (421322443).

It is a super-2 number, since 2×421322430² = 355025180042209800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 421322397 and 421322406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7022011 + ... + 7022070.

It is an arithmetic number, because the mean of its divisors is an integer number (63198369).

Almost surely, 2^421322430 is an apocalyptic number.

421322430 is an abundant number, since it is smaller than the sum of its proper divisors (589851474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421322430 is a wasteful number, since it uses less digits than its factorization.

421322430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14044091.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 421322430 is about 20526.1401632163. The cubic root of 421322430 is about 749.6724080433.

Adding to 421322430 its reverse (34223124), we get a palindrome (455545554).

The spelling of 421322430 in words is "four hundred twenty-one million, three hundred twenty-two thousand, four hundred thirty".