42227145 has 24 divisors (see below), whose sum is σ = 73873800. Its totient is φ = 22311936.

The previous prime is 42227137. The next prime is 42227173. The reversal of 42227145 is 54172224.

It can be written as a sum of positive squares in 4 ways, for example, as 3326976 + 38900169 = 1824^2 + 6237^2 .

It is not a de Polignac number, because 42227145 - 2³ = 42227137 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 601 + ... + 9209.

It is an arithmetic number, because the mean of its divisors is an integer number (3078075).

Almost surely, 2^42227145 is an apocalyptic number.

42227145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42227145 is a deficient number, since it is larger than the sum of its proper divisors (31646655).

42227145 is a wasteful number, since it uses less digits than its factorization.

42227145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8729 (or 8726 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 42227145 is about 6498.2416852561. The cubic root of 42227145 is about 348.2281747743.

Adding to 42227145 its reverse (54172224), we get a palindrome (96399369).

The spelling of 42227145 in words is "forty-two million, two hundred twenty-seven thousand, one hundred forty-five".