43214781420 has 240 divisors, whose sum is σ = 148908291840. Its totient is φ = 10442577024.

The previous prime is 43214781413. The next prime is 43214781437. The reversal of 43214781420 is 2418741234.

43214781420 is a `hidden beast` number, since 43 + 2 + 1 + 478 + 142 + 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 79 ways as a sum of consecutive naturals, for example, 677419 + ... + 738461.

It is an arithmetic number, because the mean of its divisors is an integer number (620451216).

Almost surely, 2^43214781420 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 43214781420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74454145920).

43214781420 is an abundant number, since it is smaller than the sum of its proper divisors (105693510420).

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

43214781420 is a wasteful number, since it uses less digits than its factorization.

43214781420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61106 (or 61095 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 43214781420 in words is "forty-three billion, two hundred fourteen million, seven hundred eighty-one thousand, four hundred twenty".