421455232000 has 176 divisors, whose sum is σ = 1147027770720. Its totient is φ = 153255936000.

The previous prime is 421455231991. The next prime is 421455232043. The reversal of 421455232000 is 232554124.

It is a tau number, because it is divible by the number of its divisors (176).

It is a self number, because there is not a number n which added to its sum of digits gives 421455232000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1258336 + ... + 1557664.

Almost surely, 2^421455232000 is an apocalyptic number.

421455232000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421455232000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573513885360).

421455232000 is an abundant number, since it is smaller than the sum of its proper divisors (725572538720).

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

421455232000 is a wasteful number, since it uses less digits than its factorization.

421455232000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299375 (or 299347 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 421455232000 its reverse (232554124), we get a palindrome (421687786124).

The spelling of 421455232000 in words is "four hundred twenty-one billion, four hundred fifty-five million, two hundred thirty-two thousand".