43661134 has 16 divisors (see below), whose sum is σ = 75648816. Its totient is φ = 18678400.

The previous prime is 43661119. The next prime is 43661141. The reversal of 43661134 is 43116634.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57997 + ... + 58744.

It is an arithmetic number, because the mean of its divisors is an integer number (4728051).

Almost surely, 2^43661134 is an apocalyptic number.

43661134 is a deficient number, since it is larger than the sum of its proper divisors (31987682).

43661134 is a wasteful number, since it uses less digits than its factorization.

43661134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116771.

The product of its digits is 5184, while the sum is 28.

The square root of 43661134 is about 6607.6572247658. The cubic root of 43661134 is about 352.1261976484.

Adding to 43661134 its reverse (43116634), we get a palindrome (86777768).

It can be divided in two parts, 436611 and 34, that added together give a triangular number (436645 = T₉₃₄).

The spelling of 43661134 in words is "forty-three million, six hundred sixty-one thousand, one hundred thirty-four".