42272722 has 16 divisors (see below), whose sum is σ = 66715992. Its totient is φ = 20062080.

The previous prime is 42272719. The next prime is 42272729. The reversal of 42272722 is 22727224.

It can be written as a sum of positive squares in 4 ways, for example, as 42003361 + 269361 = 6481^2 + 519^2 .

It is a super-3 number, since 3×42272722³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42272729) 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 7 ways as a sum of consecutive naturals, for example, 3933 + ... + 10000.

Almost surely, 2^42272722 is an apocalyptic number.

42272722 is a deficient number, since it is larger than the sum of its proper divisors (24443270).

42272722 is a wasteful number, since it uses less digits than its factorization.

42272722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14013.

The product of its digits is 6272, while the sum is 28.

The square root of 42272722 is about 6501.7476112196. The cubic root of 42272722 is about 348.3534140318.

Adding to 42272722 its reverse (22727224), we get a palindrome (64999946).

The spelling of 42272722 in words is "forty-two million, two hundred seventy-two thousand, seven hundred twenty-two".