42272788 has 6 divisors (see below), whose sum is σ = 73977386. Its totient is φ = 21136392.

The previous prime is 42272771. The next prime is 42272801. The reversal of 42272788 is 88727224.

It can be written as a sum of positive squares in only one way, i.e., 33200644 + 9072144 = 5762^2 + 3012^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42272788.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5284095 + ... + 5284102.

Almost surely, 2^42272788 is an apocalyptic number.

It is an amenable number.

42272788 is a deficient number, since it is larger than the sum of its proper divisors (31704598).

42272788 is a wasteful number, since it uses less digits than its factorization.

42272788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10568201 (or 10568199 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 42272788 is about 6501.7526867761. The cubic root of 42272788 is about 348.3535953253.

The spelling of 42272788 in words is "forty-two million, two hundred seventy-two thousand, seven hundred eighty-eight".