43211223142 has 4 divisors (see below), whose sum is σ = 64816834716. Its totient is φ = 21605611570.

The previous prime is 43211223137. The next prime is 43211223199. The reversal of 43211223142 is 24132211234.

43211223142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10802805784 + ... + 10802805787.

It is an arithmetic number, because the mean of its divisors is an integer number (16204208679).

Almost surely, 2^43211223142 is an apocalyptic number.

43211223142 is a deficient number, since it is larger than the sum of its proper divisors (21605611574).

43211223142 is a wasteful number, since it uses less digits than its factorization.

43211223142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21605611573.

The product of its digits is 2304, while the sum is 25.

Adding to 43211223142 its reverse (24132211234), we get a palindrome (67343434376).

The spelling of 43211223142 in words is "forty-three billion, two hundred eleven million, two hundred twenty-three thousand, one hundred forty-two".