42490605 has 16 divisors (see below), whose sum is σ = 68806080. Its totient is φ = 22387968.

The previous prime is 42490583. The next prime is 42490621. The reversal of 42490605 is 50609424.

42490605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42490605 - 2⁵ = 42490573 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 15820 + ... + 18309.

It is an arithmetic number, because the mean of its divisors is an integer number (4300380).

Almost surely, 2^42490605 is an apocalyptic number.

It is an amenable number.

42490605 is a deficient number, since it is larger than the sum of its proper divisors (26315475).

42490605 is a wasteful number, since it uses less digits than its factorization.

42490605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34220.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 42490605 is about 6518.4818017695. The cubic root of 42490605 is about 348.9508856647.

The spelling of 42490605 in words is "forty-two million, four hundred ninety thousand, six hundred five".