43122004020 has 120 divisors (see below), whose sum is σ = 141156981504. Its totient is φ = 10999226304.

The previous prime is 43122003989. The next prime is 43122004033. The reversal of 43122004020 is 2040022134.

43122004020 is a `hidden beast` number, since 43 + 1 + 220 + 0 + 402 + 0 = 666.

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 = 43122003984 and 43122004002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 541404 + ... + 615923.

Almost surely, 2^43122004020 is an apocalyptic number.

It is an amenable number.

43122004020 is an abundant number, since it is smaller than the sum of its proper divisors (98034977484).

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

43122004020 is a wasteful number, since it uses less digits than its factorization.

43122004020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157371 (or 1157360 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 43122004020 its reverse (2040022134), we get a palindrome (45162026154).

The spelling of 43122004020 in words is "forty-three billion, one hundred twenty-two million, four thousand, twenty".