421335402 has 32 divisors (see below), whose sum is σ = 858816000. Its totient is φ = 137764848.

The previous prime is 421335359. The next prime is 421335407. The reversal of 421335402 is 204533124.

It is not an unprimeable number, because it can be changed into a prime (421335407) 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 15 ways as a sum of consecutive naturals, for example, 211053 + ... + 213039.

It is an arithmetic number, because the mean of its divisors is an integer number (26838000).

Almost surely, 2^421335402 is an apocalyptic number.

421335402 is an abundant number, since it is smaller than the sum of its proper divisors (437480598).

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

421335402 is a wasteful number, since it uses less digits than its factorization.

421335402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2650.

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

The square root of 421335402 is about 20526.4561481031. The cubic root of 421335402 is about 749.6801017951.

Adding to 421335402 its reverse (204533124), we get a palindrome (625868526).

The spelling of 421335402 in words is "four hundred twenty-one million, three hundred thirty-five thousand, four hundred two".