42040606 has 4 divisors (see below), whose sum is σ = 63060912. Its totient is φ = 21020302.

The previous prime is 42040601. The next prime is 42040613. The reversal of 42040606 is 60604024.

42040606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42040601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510150 + ... + 10510153.

It is an arithmetic number, because the mean of its divisors is an integer number (15765228).

Almost surely, 2^42040606 is an apocalyptic number.

42040606 is a deficient number, since it is larger than the sum of its proper divisors (21020306).

42040606 is a wasteful number, since it uses less digits than its factorization.

42040606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21020305.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 42040606 is about 6483.8727624777. The cubic root of 42040606 is about 347.7146502623.

The spelling of 42040606 in words is "forty-two million, forty thousand, six hundred six".