42272769 has 16 divisors (see below), whose sum is σ = 70272000. Its totient is φ = 21959760.

The previous prime is 42272743. The next prime is 42272771. The reversal of 42272769 is 96727224.

It is not a de Polignac number, because 42272769 - 2⁸ = 42272513 is a prime.

It is a super-2 number, since 2×42272769² = 3573973997854722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42272719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91269 + ... + 91730.

It is an arithmetic number, because the mean of its divisors is an integer number (4392000).

Almost surely, 2^42272769 is an apocalyptic number.

It is an amenable number.

42272769 is a deficient number, since it is larger than the sum of its proper divisors (27999231).

42272769 is a wasteful number, since it uses less digits than its factorization.

42272769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183020.

The product of its digits is 84672, while the sum is 39.

The square root of 42272769 is about 6501.7512256314. The cubic root of 42272769 is about 348.3535431348.

It can be divided in two parts, 4227 and 2769, that added together give a palindrome (6996).

The spelling of 42272769 in words is "forty-two million, two hundred seventy-two thousand, seven hundred sixty-nine".