42763209 has 16 divisors (see below), whose sum is σ = 58320000. Its totient is φ = 27862016.

The previous prime is 42763183. The next prime is 42763261. The reversal of 42763209 is 90236724.

It is a cyclic number.

It is not a de Polignac number, because 42763209 - 2⁹ = 42762697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42763209.

It is not an unprimeable number, because it can be changed into a prime (42763289) 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, 71092 + ... + 71690.

It is an arithmetic number, because the mean of its divisors is an integer number (3645000).

Almost surely, 2^42763209 is an apocalyptic number.

It is an amenable number.

42763209 is a deficient number, since it is larger than the sum of its proper divisors (15556791).

42763209 is a wasteful number, since it uses less digits than its factorization.

42763209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 42763209 is about 6539.3584547721. The cubic root of 42763209 is about 349.6955420377.

It can be divided in two parts, 427 and 63209, that added together give a palindrome (63636).

The spelling of 42763209 in words is "forty-two million, seven hundred sixty-three thousand, two hundred nine".