43123200120 has 1024 divisors, whose sum is σ = 195258470400. Its totient is φ = 8174960640.

The previous prime is 43123200091. The next prime is 43123200143. The reversal of 43123200120 is 2100232134.

43123200120 is a `hidden beast` number, since 431 + 23 + 200 + 12 + 0 = 666.

It is a super-2 number, since 2×43123200120² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 43123200093 and 43123200102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 122161864 + ... + 122162216.

It is an arithmetic number, because the mean of its divisors is an integer number (190682100).

Almost surely, 2^43123200120 is an apocalyptic number.

43123200120 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 43123200120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97629235200).

43123200120 is an abundant number, since it is smaller than the sum of its proper divisors (152135270280).

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

43123200120 is a wasteful number, since it uses less digits than its factorization.

43123200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 43123200120 its reverse (2100232134), we get a palindrome (45223432254).

The spelling of 43123200120 in words is "forty-three billion, one hundred twenty-three million, two hundred thousand, one hundred twenty".