421030402 has 8 divisors (see below), whose sum is σ = 680126076. Its totient is φ = 194321712.

The previous prime is 421030397. The next prime is 421030403. The reversal of 421030402 is 204030124.

It can be written as a sum of positive squares in 2 ways, for example, as 419389441 + 1640961 = 20479^2 + 1281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (421030403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8096713 + ... + 8096764.

Almost surely, 2^421030402 is an apocalyptic number.

421030402 is a deficient number, since it is larger than the sum of its proper divisors (259095674).

421030402 is a wasteful number, since it uses less digits than its factorization.

421030402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16193492.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 421030402 is about 20519.0253667176. The cubic root of 421030402 is about 749.4991631058.

Adding to 421030402 its reverse (204030124), we get a palindrome (625060526).

The spelling of 421030402 in words is "four hundred twenty-one million, thirty thousand, four hundred two".