421261864152 has 256 divisors, whose sum is σ = 1213586841600. Its totient is φ = 121067274240.

The previous prime is 421261864097. The next prime is 421261864207. The reversal of 421261864152 is 251468162124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (421261864097) and next prime (421261864207).

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, 28210224 + ... + 28225152.

It is an arithmetic number, because the mean of its divisors is an integer number (4740573600).

Almost surely, 2^421261864152 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 421261864152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606793420800).

421261864152 is an abundant number, since it is smaller than the sum of its proper divisors (792324977448).

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

421261864152 is a wasteful number, since it uses less digits than its factorization.

421261864152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15106 (or 15102 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The spelling of 421261864152 in words is "four hundred twenty-one billion, two hundred sixty-one million, eight hundred sixty-four thousand, one hundred fifty-two".