420042002044 has 72 divisors (see below), whose sum is σ = 867311132688. Its totient is φ = 177447110400.

The previous prime is 420042002027. The next prime is 420042002059. The reversal of 420042002044 is 440200240024.

It is a super-2 number, since 2×420042002044² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27191787 + ... + 27207229.

It is an arithmetic number, because the mean of its divisors is an integer number (12045987954).

Almost surely, 2^420042002044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420042002044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433655566344).

420042002044 is an abundant number, since it is smaller than the sum of its proper divisors (447269130644).

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

420042002044 is a wasteful number, since it uses less digits than its factorization.

420042002044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17435 (or 17426 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 420042002044 its reverse (440200240024), we get a palindrome (860242242068).

The spelling of 420042002044 in words is "four hundred twenty billion, forty-two million, two thousand, forty-four".