420430242 has 32 divisors (see below), whose sum is σ = 850026240. Its totient is φ = 138623760.

The previous prime is 420430211. The next prime is 420430249. The reversal of 420430242 is 242034024.

It is not an unprimeable number, because it can be changed into a prime (420430249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275293 + ... + 276815.

It is an arithmetic number, because the mean of its divisors is an integer number (26563320).

Almost surely, 2^420430242 is an apocalyptic number.

420430242 is an abundant number, since it is smaller than the sum of its proper divisors (429595998).

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

420430242 is a wasteful number, since it uses less digits than its factorization.

420430242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998.

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

The square root of 420430242 is about 20504.3956750742. The cubic root of 420430242 is about 749.1428679171.

Adding to 420430242 its reverse (242034024), we get a palindrome (662464266).

The spelling of 420430242 in words is "four hundred twenty million, four hundred thirty thousand, two hundred forty-two".