421403535 has 96 divisors (see below), whose sum is σ = 869686272. Its totient is φ = 184757760.

The previous prime is 421403513. The next prime is 421403537. The reversal of 421403535 is 535304124.

It is not a de Polignac number, because 421403535 - 2⁹ = 421403023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421403499 and 421403508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421403537) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 865062 + ... + 865548.

It is an arithmetic number, because the mean of its divisors is an integer number (9059232).

Almost surely, 2^421403535 is an apocalyptic number.

421403535 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

421403535 is an abundant number, since it is smaller than the sum of its proper divisors (448282737).

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

421403535 is a wasteful number, since it uses less digits than its factorization.

421403535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 421403535 is about 20528.1157196660. The cubic root of 421403535 is about 749.7205091928.

Adding to 421403535 its reverse (535304124), we get a palindrome (956707659).

The spelling of 421403535 in words is "four hundred twenty-one million, four hundred three thousand, five hundred thirty-five".