43531142 has 4 divisors (see below), whose sum is σ = 65296716. Its totient is φ = 21765570.

The previous prime is 43531139. The next prime is 43531151. The reversal of 43531142 is 24113534.

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, 10882784 + ... + 10882787.

It is an arithmetic number, because the mean of its divisors is an integer number (16324179).

Almost surely, 2^43531142 is an apocalyptic number.

43531142 is a deficient number, since it is larger than the sum of its proper divisors (21765574).

43531142 is a wasteful number, since it uses less digits than its factorization.

43531142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21765573.

The product of its digits is 1440, while the sum is 23.

The square root of 43531142 is about 6597.8134256737. The cubic root of 43531142 is about 351.7763892727.

Adding to 43531142 its reverse (24113534), we get a palindrome (67644676).

The spelling of 43531142 in words is "forty-three million, five hundred thirty-one thousand, one hundred forty-two".