42665293 has 16 divisors (see below), whose sum is σ = 48787200. Its totient is φ = 36953280.

The previous prime is 42665281. The next prime is 42665309. The reversal of 42665293 is 39256624.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42665293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42665243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24355 + ... + 26047.

It is an arithmetic number, because the mean of its divisors is an integer number (3049200).

Almost surely, 2^42665293 is an apocalyptic number.

It is an amenable number.

42665293 is a deficient number, since it is larger than the sum of its proper divisors (6121907).

42665293 is a wasteful number, since it uses less digits than its factorization.

42665293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812.

The product of its digits is 77760, while the sum is 37.

The square root of 42665293 is about 6531.8674971252. The cubic root of 42665293 is about 349.4284358281.

It can be divided in two parts, 4266 and 5293, that added together give a palindrome (9559).

The spelling of 42665293 in words is "forty-two million, six hundred sixty-five thousand, two hundred ninety-three".