420304242 has 16 divisors (see below), whose sum is σ = 843582240. Its totient is φ = 139605792.

The previous prime is 420304223. The next prime is 420304319. The reversal of 420304242 is 242403024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122067 + ... + 125462.

It is an arithmetic number, because the mean of its divisors is an integer number (52723890).

Almost surely, 2^420304242 is an apocalyptic number.

420304242 is an abundant number, since it is smaller than the sum of its proper divisors (423277998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420304242 is a wasteful number, since it uses less digits than its factorization.

420304242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247817.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 420304242 is about 20501.3229329231. The cubic root of 420304242 is about 749.0680228155.

Adding to 420304242 its reverse (242403024), we get a palindrome (662707266).

The spelling of 420304242 in words is "four hundred twenty million, three hundred four thousand, two hundred forty-two".