421403235 has 16 divisors (see below), whose sum is σ = 735540480. Its totient is φ = 204316640.

The previous prime is 421403221. The next prime is 421403251. The reversal of 421403235 is 532304124.

It is not a de Polignac number, because 421403235 - 2⁴ = 421403219 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276815 + ... + 1277144.

It is an arithmetic number, because the mean of its divisors is an integer number (45971280).

Almost surely, 2^421403235 is an apocalyptic number.

421403235 is a deficient number, since it is larger than the sum of its proper divisors (314137245).

421403235 is a wasteful number, since it uses less digits than its factorization.

421403235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553978.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 421403235 is about 20528.1084126132. The cubic root of 421403235 is about 749.7203312824.

Adding to 421403235 its reverse (532304124), we get a palindrome (953707359).

The spelling of 421403235 in words is "four hundred twenty-one million, four hundred three thousand, two hundred thirty-five".