42605242 has 8 divisors (see below), whose sum is σ = 64163232. Its totient is φ = 21217500.

The previous prime is 42605237. The next prime is 42605243. The reversal of 42605242 is 24250624.

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

It is not an unprimeable number, because it can be changed into a prime (42605243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41934 + ... + 42937.

It is an arithmetic number, because the mean of its divisors is an integer number (8020404).

Almost surely, 2^42605242 is an apocalyptic number.

42605242 is a deficient number, since it is larger than the sum of its proper divisors (21557990).

42605242 is a wasteful number, since it uses less digits than its factorization.

42605242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85124.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 42605242 is about 6527.2691073680. The cubic root of 42605242 is about 349.2644197709.

Adding to 42605242 its reverse (24250624), we get a palindrome (66855866).

It can be divided in two parts, 42 and 605242, that added together give a square (605284 = 778²).

The spelling of 42605242 in words is "forty-two million, six hundred five thousand, two hundred forty-two".