420324442 has 8 divisors (see below), whose sum is σ = 631048500. Its totient is φ = 209974944.

The previous prime is 420324419. The next prime is 420324467. The reversal of 420324442 is 244423024.

It can be written as a sum of positive squares in 2 ways, for example, as 413349561 + 6974881 = 20331^2 + 2641^2 .

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

It is a super-2 number, since 2×420324442² = 353345273085222728, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 90817 + ... + 95332.

Almost surely, 2^420324442 is an apocalyptic number.

420324442 is a deficient number, since it is larger than the sum of its proper divisors (210724058).

420324442 is a wasteful number, since it uses less digits than its factorization.

420324442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187280.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 420324442 is about 20501.8155781384. The cubic root of 420324442 is about 749.0800227988.

Adding to 420324442 its reverse (244423024), we get a palindrome (664747466).

The spelling of 420324442 in words is "four hundred twenty million, three hundred twenty-four thousand, four hundred forty-two".