43521142 has 16 divisors (see below), whose sum is σ = 74727072. Its totient is φ = 18622080.

The previous prime is 43521119. The next prime is 43521157. The reversal of 43521142 is 24112534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8142 + ... + 12382.

It is an arithmetic number, because the mean of its divisors is an integer number (4670442).

Almost surely, 2^43521142 is an apocalyptic number.

43521142 is a deficient number, since it is larger than the sum of its proper divisors (31205930).

43521142 is a wasteful number, since it uses less digits than its factorization.

43521142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4983.

The product of its digits is 960, while the sum is 22.

The square root of 43521142 is about 6597.0555553216. The cubic root of 43521142 is about 351.7494504489.

Adding to 43521142 its reverse (24112534), we get a palindrome (67633676).

The spelling of 43521142 in words is "forty-three million, five hundred twenty-one thousand, one hundred forty-two".