42067221 has 8 divisors (see below), whose sum is σ = 64102464. Its totient is φ = 24038400.

The previous prime is 42067169. The next prime is 42067237. The reversal of 42067221 is 12276024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42067221 - 2¹³ = 42059029 is a prime.

It is a super-3 number, since 3×42067221³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42067191 and 42067200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42067321) 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, 1001580 + ... + 1001621.

It is an arithmetic number, because the mean of its divisors is an integer number (8012808).

Almost surely, 2^42067221 is an apocalyptic number.

It is an amenable number.

42067221 is a deficient number, since it is larger than the sum of its proper divisors (22035243).

42067221 is a wasteful number, since it uses less digits than its factorization.

42067221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003211.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 42067221 is about 6485.9248376774. The cubic root of 42067221 is about 347.7880116626.

The spelling of 42067221 in words is "forty-two million, sixty-seven thousand, two hundred twenty-one".