42222177 has 6 divisors (see below), whose sum is σ = 60987602. Its totient is φ = 28148112.

The previous prime is 42222139. The next prime is 42222221. The reversal of 42222177 is 77122224.

It can be written as a sum of positive squares in only one way, i.e., 33454656 + 8767521 = 5784^2 + 2961^2 .

It is not a de Polignac number, because 42222177 - 2⁷ = 42222049 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 42222177.

It is not an unprimeable number, because it can be changed into a prime (42222107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2345668 + ... + 2345685.

Almost surely, 2^42222177 is an apocalyptic number.

It is an amenable number.

42222177 is a deficient number, since it is larger than the sum of its proper divisors (18765425).

42222177 is a wasteful number, since it uses less digits than its factorization.

42222177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691359 (or 4691356 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 42222177 is about 6497.8594167618. The cubic root of 42222177 is about 348.2145179553.

It can be divided in two parts, 4222217 and 7, that added together give a palindrome (4222224).

The spelling of 42222177 in words is "forty-two million, two hundred twenty-two thousand, one hundred seventy-seven".