43021214040 has 384 divisors, whose sum is σ = 152980047360. Its totient is φ = 9677144064.

The previous prime is 43021214017. The next prime is 43021214077. The reversal of 43021214040 is 4041212034.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 43021213998 and 43021214016.

It is a congruent number.

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, 167397592 + ... + 167397848.

It is an arithmetic number, because the mean of its divisors is an integer number (398385540).

Almost surely, 2^43021214040 is an apocalyptic number.

43021214040 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 43021214040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76490023680).

43021214040 is an abundant number, since it is smaller than the sum of its proper divisors (109958833320).

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

43021214040 is an equidigital number, since it uses as much as digits as its factorization.

43021214040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 43021214040 its reverse (4041212034), we get a palindrome (47062426074).

The spelling of 43021214040 in words is "forty-three billion, twenty-one million, two hundred fourteen thousand, forty".