420130442 has 8 divisors (see below), whose sum is σ = 630449796. Its totient is φ = 209980512.

The previous prime is 420130441. The next prime is 420130457. The reversal of 420130442 is 244031024.

It can be written as a sum of positive squares in 2 ways, for example, as 403246561 + 16883881 = 20081^2 + 4109^2 .

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 (420130441) 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 3 ways as a sum of consecutive naturals, for example, 35963 + ... + 46190.

Almost surely, 2^420130442 is an apocalyptic number.

420130442 is a deficient number, since it is larger than the sum of its proper divisors (210319354).

420130442 is a wasteful number, since it uses less digits than its factorization.

420130442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84712.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 420130442 is about 20497.0837437915. The cubic root of 420130442 is about 748.9647595456.

Adding to 420130442 its reverse (244031024), we get a palindrome (664161466).

It can be divided in two parts, 4201 and 30442, that added together give a palindrome (34643).

The spelling of 420130442 in words is "four hundred twenty million, one hundred thirty thousand, four hundred forty-two".