43421321124 has 72 divisors (see below), whose sum is σ = 110334839160. Its totient is φ = 14398013952.

The previous prime is 43421321123. The next prime is 43421321143. The reversal of 43421321124 is 42112312434.

43421321124 is a `hidden beast` number, since 4 + 3 + 421 + 3 + 211 + 24 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11081772900 + 32339548224 = 105270^2 + 179832^2 .

It is a super-2 number, since 2×43421321124² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (43421321123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18902344 + ... + 18904640.

Almost surely, 2^43421321124 is an apocalyptic number.

It is an amenable number.

43421321124 is an abundant number, since it is smaller than the sum of its proper divisors (66913518036).

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

43421321124 is a wasteful number, since it uses less digits than its factorization.

43421321124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4829 (or 4824 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 43421321124 its reverse (42112312434), we get a palindrome (85533633558).

The spelling of 43421321124 in words is "forty-three billion, four hundred twenty-one million, three hundred twenty-one thousand, one hundred twenty-four".