421430025432 has 256 divisors, whose sum is σ = 1257144053760. Its totient is φ = 116406411264.

The previous prime is 421430025413. The next prime is 421430025463. The reversal of 421430025432 is 234520034124.

It is a self number, because there is not a number n which added to its sum of digits gives 421430025432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44766358 + ... + 44775770.

It is an arithmetic number, because the mean of its divisors is an integer number (4910718960).

Almost surely, 2^421430025432 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 421430025432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628572026880).

421430025432 is an abundant number, since it is smaller than the sum of its proper divisors (835714028328).

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

421430025432 is a wasteful number, since it uses less digits than its factorization.

421430025432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9842 (or 9838 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 421430025432 its reverse (234520034124), we get a palindrome (655950059556).

The spelling of 421430025432 in words is "four hundred twenty-one billion, four hundred thirty million, twenty-five thousand, four hundred thirty-two".