42249657 has 8 divisors (see below), whose sum is σ = 56575584. Its totient is φ = 28045088.

The previous prime is 42249653. The next prime is 42249667. The reversal of 42249657 is 75694224.

42249657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42249657 - 2² = 42249653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42249653) 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 in 7 ways as a sum of consecutive naturals, for example, 29523 + ... + 30920.

It is an arithmetic number, because the mean of its divisors is an integer number (7071948).

Almost surely, 2^42249657 is an apocalyptic number.

It is an amenable number.

42249657 is a deficient number, since it is larger than the sum of its proper divisors (14325927).

42249657 is a wasteful number, since it uses less digits than its factorization.

42249657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60679.

The product of its digits is 120960, while the sum is 39.

The square root of 42249657 is about 6499.9736153311. The cubic root of 42249657 is about 348.2900458763.

The spelling of 42249657 in words is "forty-two million, two hundred forty-nine thousand, six hundred fifty-seven".