42705005 has 16 divisors (see below), whose sum is σ = 58682880. Its totient is φ = 29225472.

The previous prime is 42704971. The next prime is 42705007. The reversal of 42705005 is 50050724.

It is a cyclic number.

It is not a de Polignac number, because 42705005 - 2⁸ = 42704749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42705007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24317 + ... + 26013.

It is an arithmetic number, because the mean of its divisors is an integer number (3667680).

Almost surely, 2^42705005 is an apocalyptic number.

It is an amenable number.

42705005 is a deficient number, since it is larger than the sum of its proper divisors (15977875).

42705005 is a wasteful number, since it uses less digits than its factorization.

42705005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 42705005 is about 6534.9066557985. The cubic root of 42705005 is about 349.5368158717.

Adding to 42705005 its reverse (50050724), we get a palindrome (92755729).

The spelling of 42705005 in words is "forty-two million, seven hundred five thousand, five".