421023130 has 48 divisors (see below), whose sum is σ = 836224200. Its totient is φ = 152507520.

The previous prime is 421023107. The next prime is 421023151. The reversal of 421023130 is 31320124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 412780489 + 8242641 = 20317^2 + 2871^2 .

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 23 ways as a sum of consecutive naturals, for example, 421792 + ... + 422788.

Almost surely, 2^421023130 is an apocalyptic number.

421023130 is a deficient number, since it is larger than the sum of its proper divisors (415201070).

421023130 is a wasteful number, since it uses less digits than its factorization.

421023130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 421023130 is about 20518.8481645535. The cubic root of 421023130 is about 749.4948479865.

Adding to 421023130 its reverse (31320124), we get a palindrome (452343254).

The spelling of 421023130 in words is "four hundred twenty-one million, twenty-three thousand, one hundred thirty".