420020040242 has 24 divisors (see below), whose sum is σ = 692730674496. Its totient is φ = 190858019000.

The previous prime is 420020040239. The next prime is 420020040283. The reversal of 420020040242 is 242040020024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 500267 + ... + 1044177.

It is an arithmetic number, because the mean of its divisors is an integer number (28863778104).

Almost surely, 2^420020040242 is an apocalyptic number.

420020040242 is a deficient number, since it is larger than the sum of its proper divisors (272710634254).

420020040242 is a wasteful number, since it uses less digits than its factorization.

420020040242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547126 (or 547115 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 420020040242 its reverse (242040020024), we get a palindrome (662060060266).

The spelling of 420020040242 in words is "four hundred twenty billion, twenty million, forty thousand, two hundred forty-two".