42269915 has 4 divisors (see below), whose sum is σ = 50723904. Its totient is φ = 33815928.

The previous prime is 42269869. The next prime is 42269917. The reversal of 42269915 is 51996224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42269915 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42269917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4226987 + ... + 4226996.

It is an arithmetic number, because the mean of its divisors is an integer number (12680976).

Almost surely, 2^42269915 is an apocalyptic number.

42269915 is a deficient number, since it is larger than the sum of its proper divisors (8453989).

42269915 is an equidigital number, since it uses as much as digits as its factorization.

42269915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8453988.

The product of its digits is 38880, while the sum is 38.

The square root of 42269915 is about 6501.5317425973. The cubic root of 42269915 is about 348.3457033882.

It can be divided in two parts, 4226 and 9915, that added together give a palindrome (14141).

The spelling of 42269915 in words is "forty-two million, two hundred sixty-nine thousand, nine hundred fifteen".