42220033 has 6 divisors (see below), whose sum is σ = 44559474. Its totient is φ = 39997584.

The previous prime is 42219979. The next prime is 42220081. The reversal of 42220033 is 33002224.

It can be written as a sum of positive squares in only one way, i.e., 28912129 + 13307904 = 5377^2 + 3648^2 .

It is not a de Polignac number, because 42220033 - 2⁹ = 42219521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42219989 and 42220016.

It is not an unprimeable number, because it can be changed into a prime (42220093) 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, 58116 + ... + 58837.

It is an arithmetic number, because the mean of its divisors is an integer number (7426579).

Almost surely, 2^42220033 is an apocalyptic number.

It is an amenable number.

42220033 is a deficient number, since it is larger than the sum of its proper divisors (2339441).

42220033 is a wasteful number, since it uses less digits than its factorization.

42220033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116991 (or 116972 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 42220033 is about 6497.6944372600. The cubic root of 42220033 is about 348.2086238604.

Adding to 42220033 its reverse (33002224), we get a palindrome (75222257).

The spelling of 42220033 in words is "forty-two million, two hundred twenty thousand, thirty-three".