43111204420 has 48 divisors (see below), whose sum is σ = 92195449920. Its totient is φ = 16928735616.

The previous prime is 43111204391. The next prime is 43111204427. The reversal of 43111204420 is 2440211134.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 43111204391 and 43111204400.

It is not an unprimeable number, because it can be changed into a prime (43111204427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840019 + ... + 889861.

It is an arithmetic number, because the mean of its divisors is an integer number (1920738540).

Almost surely, 2^43111204420 is an apocalyptic number.

It is an amenable number.

43111204420 is an abundant number, since it is smaller than the sum of its proper divisors (49084245500).

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

43111204420 is a wasteful number, since it uses less digits than its factorization.

43111204420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50644 (or 50642 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 43111204420 its reverse (2440211134), we get a palindrome (45551415554).

The spelling of 43111204420 in words is "forty-three billion, one hundred eleven million, two hundred four thousand, four hundred twenty".