43123142 has 4 divisors (see below), whose sum is σ = 64684716. Its totient is φ = 21561570.

The previous prime is 43123127. The next prime is 43123147. The reversal of 43123142 is 24132134.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43123147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10780784 + ... + 10780787.

It is an arithmetic number, because the mean of its divisors is an integer number (16171179).

Almost surely, 2^43123142 is an apocalyptic number.

43123142 is a deficient number, since it is larger than the sum of its proper divisors (21561574).

43123142 is a wasteful number, since it uses less digits than its factorization.

43123142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21561573.

The product of its digits is 576, while the sum is 20.

The square root of 43123142 is about 6566.8213010558. The cubic root of 43123142 is about 350.6739178785.

Adding to 43123142 its reverse (24132134), we get a palindrome (67255276).

The spelling of 43123142 in words is "forty-three million, one hundred twenty-three thousand, one hundred forty-two".