420234421432 has 128 divisors (see below), whose sum is σ = 956121408000. Its totient is φ = 169144657920.

The previous prime is 420234421333. The next prime is 420234421463. The reversal of 420234421432 is 234124432024.

It is a junction number, because it is equal to n+sod(n) for n = 420234421394 and 420234421403.

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, 141539244 + ... + 141542212.

It is an arithmetic number, because the mean of its divisors is an integer number (7469698500).

Almost surely, 2^420234421432 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 420234421432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478060704000).

420234421432 is an abundant number, since it is smaller than the sum of its proper divisors (535886986568).

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

420234421432 is a wasteful number, since it uses less digits than its factorization.

420234421432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109 (or 4105 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 420234421432 its reverse (234124432024), we get a palindrome (654358853456).

The spelling of 420234421432 in words is "four hundred twenty billion, two hundred thirty-four million, four hundred twenty-one thousand, four hundred thirty-two".