420543242 has 8 divisors (see below), whose sum is σ = 720931296. Its totient is φ = 180232812.

The previous prime is 420543203. The next prime is 420543259. The reversal of 420543242 is 242345024.

It is a happy number.

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

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, 15019388 + ... + 15019415.

It is an arithmetic number, because the mean of its divisors is an integer number (90116412).

Almost surely, 2^420543242 is an apocalyptic number.

420543242 is a deficient number, since it is larger than the sum of its proper divisors (300388054).

420543242 is a wasteful number, since it uses less digits than its factorization.

420543242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30038812.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 420543242 is about 20507.1509966646. The cubic root of 420543242 is about 749.2099781870.

Adding to 420543242 its reverse (242345024), we get a palindrome (662888266).

The spelling of 420543242 in words is "four hundred twenty million, five hundred forty-three thousand, two hundred forty-two".