421242606402 has 8 divisors (see below), whose sum is σ = 842485212816. Its totient is φ = 140414202132.

The previous prime is 421242606397. The next prime is 421242606403. The reversal of 421242606402 is 204606242124.

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

421242606402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (421242606403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35103550528 + ... + 35103550539.

It is an arithmetic number, because the mean of its divisors is an integer number (105310651602).

Almost surely, 2^421242606402 is an apocalyptic number.

421242606402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

421242606402 is a wasteful number, since it uses less digits than its factorization.

421242606402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70207101072.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 421242606402 its reverse (204606242124), we get a palindrome (625848848526).

The spelling of 421242606402 in words is "four hundred twenty-one billion, two hundred forty-two million, six hundred six thousand, four hundred two".