43604542 has 4 divisors (see below), whose sum is σ = 65406816. Its totient is φ = 21802270.

The previous prime is 43604489. The next prime is 43604549. The reversal of 43604542 is 24540634.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24540634 = 2 ⋅12270317.

It is a self number, because there is not a number n which added to its sum of digits gives 43604542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43604549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10901134 + ... + 10901137.

It is an arithmetic number, because the mean of its divisors is an integer number (16351704).

Almost surely, 2^43604542 is an apocalyptic number.

43604542 is a deficient number, since it is larger than the sum of its proper divisors (21802274).

43604542 is a wasteful number, since it uses less digits than its factorization.

43604542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21802273.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 43604542 is about 6603.3735317639. The cubic root of 43604542 is about 351.9739940756.

The spelling of 43604542 in words is "forty-three million, six hundred four thousand, five hundred forty-two".