420442020402 has 16 divisors (see below), whose sum is σ = 840980588160. Its totient is φ = 140131248912.

The previous prime is 420442020379. The next prime is 420442020431. The reversal of 420442020402 is 204020244024.

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, 3966133 + ... + 4070760.

It is an arithmetic number, because the mean of its divisors is an integer number (52561286760).

Almost surely, 2^420442020402 is an apocalyptic number.

420442020402 is an abundant number, since it is smaller than the sum of its proper divisors (420538567758).

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

420442020402 is a wasteful number, since it uses less digits than its factorization.

420442020402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8045617.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 420442020402 its reverse (204020244024), we get a palindrome (624462264426).

The spelling of 420442020402 in words is "four hundred twenty billion, four hundred forty-two million, twenty thousand, four hundred two".