421214530 has 16 divisors (see below), whose sum is σ = 827112384. Its totient is φ = 153168880.

The previous prime is 421214527. The next prime is 421214537. The reversal of 421214530 is 35412124.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (421214537) 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 7 ways as a sum of consecutive naturals, for example, 1914502 + ... + 1914721.

It is an arithmetic number, because the mean of its divisors is an integer number (51694524).

Almost surely, 2^421214530 is an apocalyptic number.

421214530 is a deficient number, since it is larger than the sum of its proper divisors (405897854).

421214530 is a wasteful number, since it uses less digits than its factorization.

421214530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829241.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 421214530 is about 20523.5116390933. The cubic root of 421214530 is about 749.6084059447.

Adding to 421214530 its reverse (35412124), we get a palindrome (456626654).

The spelling of 421214530 in words is "four hundred twenty-one million, two hundred fourteen thousand, five hundred thirty".