420523130 has 32 divisors (see below), whose sum is σ = 785480976. Its totient is φ = 161961984.

The previous prime is 420523123. The next prime is 420523151. The reversal of 420523130 is 31325024.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 117310561 + 303212569 = 10831^2 + 17413^2 .

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 15 ways as a sum of consecutive naturals, for example, 30032 + ... + 41748.

Almost surely, 2^420523130 is an apocalyptic number.

420523130 is a deficient number, since it is larger than the sum of its proper divisors (364957846).

420523130 is a wasteful number, since it uses less digits than its factorization.

420523130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11858.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 420523130 is about 20506.6606252700. The cubic root of 420523130 is about 749.1980346262.

Adding to 420523130 its reverse (31325024), we get a palindrome (451848154).

The spelling of 420523130 in words is "four hundred twenty million, five hundred twenty-three thousand, one hundred thirty".