421260440580 has 288 divisors, whose sum is σ = 1530082235136. Its totient is φ = 95294693376.

The previous prime is 421260440537. The next prime is 421260440593. The reversal of 421260440580 is 85044062124.

421260440580 is a `hidden beast` number, since 4 + 2 + 1 + 2 + 604 + 40 + 5 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3236112 + ... + 3363768.

Almost surely, 2^421260440580 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 421260440580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765041117568).

421260440580 is an abundant number, since it is smaller than the sum of its proper divisors (1108821794556).

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

421260440580 is a wasteful number, since it uses less digits than its factorization.

421260440580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127785 (or 127771 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 421260440580 in words is "four hundred twenty-one billion, two hundred sixty million, four hundred forty thousand, five hundred eighty".