420020242 has 8 divisors (see below), whose sum is σ = 634991616. Its totient is φ = 208356372.

The previous prime is 420020231. The next prime is 420020243. The reversal of 420020242 is 242020024.

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 (420020243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826558 + ... + 827065.

It is an arithmetic number, because the mean of its divisors is an integer number (79373952).

Almost surely, 2^420020242 is an apocalyptic number.

420020242 is a deficient number, since it is larger than the sum of its proper divisors (214971374).

420020242 is a wasteful number, since it uses less digits than its factorization.

420020242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653752.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 420020242 is about 20494.3953802009. The cubic root of 420020242 is about 748.8992694615.

Adding to 420020242 its reverse (242020024), we get a palindrome (662040266).

It can be divided in two parts, 4200 and 20242, that added together give a palindrome (24442).

The spelling of 420020242 in words is "four hundred twenty million, twenty thousand, two hundred forty-two".