43542044 has 96 divisors (see below), whose sum is σ = 99743616. Its totient is φ = 16174080.

The previous prime is 43542043. The next prime is 43542089. The reversal of 43542044 is 44024534.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43542043) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 713774 + ... + 713834.

It is an arithmetic number, because the mean of its divisors is an integer number (1038996).

Almost surely, 2^43542044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43542044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49871808).

43542044 is an abundant number, since it is smaller than the sum of its proper divisors (56201572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43542044 is a wasteful number, since it uses less digits than its factorization.

43542044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 43542044 is about 6598.6395567571. The cubic root of 43542044 is about 351.8057532782.

Adding to 43542044 its reverse (44024534), we get a palindrome (87566578).

The spelling of 43542044 in words is "forty-three million, five hundred forty-two thousand, forty-four".