43405042 has 8 divisors (see below), whose sum is σ = 65271132. Its totient is φ = 21648000.

The previous prime is 43405013. The next prime is 43405051. The reversal of 43405042 is 24050434.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43309561 + 95481 = 6581^2 + 309^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26259 + ... + 27862.

Almost surely, 2^43405042 is an apocalyptic number.

43405042 is a deficient number, since it is larger than the sum of its proper divisors (21866090).

43405042 is a wasteful number, since it uses less digits than its factorization.

43405042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54524.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 43405042 is about 6588.2502988275. The cubic root of 43405042 is about 351.4363882035.

Adding to 43405042 its reverse (24050434), we get a palindrome (67455476).

The spelling of 43405042 in words is "forty-three million, four hundred five thousand, forty-two".