43111232142 has 128 divisors (see below), whose sum is σ = 102834800640. Its totient is φ = 11907181440.

The previous prime is 43111231997. The next prime is 43111232149. The reversal of 43111232142 is 24123211134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43111232149) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3606808 + ... + 3618740.

It is an arithmetic number, because the mean of its divisors is an integer number (803396880).

Almost surely, 2^43111232142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43111232142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51417400320).

43111232142 is an abundant number, since it is smaller than the sum of its proper divisors (59723568498).

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

43111232142 is a wasteful number, since it uses less digits than its factorization.

43111232142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12078.

The product of its digits is 1152, while the sum is 24.

Adding to 43111232142 its reverse (24123211134), we get a palindrome (67234443276).

The spelling of 43111232142 in words is "forty-three billion, one hundred eleven million, two hundred thirty-two thousand, one hundred forty-two".