420433434102 has 64 divisors (see below), whose sum is σ = 950673604608. Its totient is φ = 122802900000.

The previous prime is 420433434079. The next prime is 420433434137. The reversal of 420433434102 is 201434334024.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 420433434102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104203 + ... + 922889.

It is an arithmetic number, because the mean of its divisors is an integer number (14854275072).

Almost surely, 2^420433434102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420433434102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (475336802304).

420433434102 is an abundant number, since it is smaller than the sum of its proper divisors (530240170506).

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

420433434102 is a wasteful number, since it uses less digits than its factorization.

420433434102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818985.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 420433434102 its reverse (201434334024), we get a palindrome (621867768126).

The spelling of 420433434102 in words is "four hundred twenty billion, four hundred thirty-three million, four hundred thirty-four thousand, one hundred two".