421340330 has 16 divisors (see below), whose sum is σ = 763068384. Its totient is φ = 167501520.

The previous prime is 421340327. The next prime is 421340351. The reversal of 421340330 is 33043124.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 127616 + ... + 130875.

It is an arithmetic number, because the mean of its divisors is an integer number (47691774).

Almost surely, 2^421340330 is an apocalyptic number.

421340330 is a deficient number, since it is larger than the sum of its proper divisors (341728054).

421340330 is a wasteful number, since it uses less digits than its factorization.

421340330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258661.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 421340330 is about 20526.5761879569. The cubic root of 421340330 is about 749.6830245728.

Adding to 421340330 its reverse (33043124), we get a palindrome (454383454).

The spelling of 421340330 in words is "four hundred twenty-one million, three hundred forty thousand, three hundred thirty".