42494906 has 16 divisors (see below), whose sum is σ = 68020800. Its totient is φ = 19852128.

The previous prime is 42494899. The next prime is 42494911. The reversal of 42494906 is 60949424.

42494906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42494906.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4886 + ... + 10433.

It is an arithmetic number, because the mean of its divisors is an integer number (4251300).

Almost surely, 2^42494906 is an apocalyptic number.

42494906 is a deficient number, since it is larger than the sum of its proper divisors (25525894).

42494906 is a wasteful number, since it uses less digits than its factorization.

42494906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15413.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 42494906 is about 6518.8117015297. The cubic root of 42494906 is about 348.9626591467.

The spelling of 42494906 in words is "forty-two million, four hundred ninety-four thousand, nine hundred six".