43621142 has 4 divisors (see below), whose sum is σ = 65431716. Its totient is φ = 21810570.

The previous prime is 43621121. The next prime is 43621147. The reversal of 43621142 is 24112634.

43621142 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 not an unprimeable number, because it can be changed into a prime (43621147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10905284 + ... + 10905287.

It is an arithmetic number, because the mean of its divisors is an integer number (16357929).

Almost surely, 2^43621142 is an apocalyptic number.

43621142 is a deficient number, since it is larger than the sum of its proper divisors (21810574).

43621142 is a wasteful number, since it uses less digits than its factorization.

43621142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21810573.

The product of its digits is 1152, while the sum is 23.

The square root of 43621142 is about 6604.6303454470. The cubic root of 43621142 is about 352.0186532384.

Adding to 43621142 its reverse (24112634), we get a palindrome (67733776).

The spelling of 43621142 in words is "forty-three million, six hundred twenty-one thousand, one hundred forty-two".