42222001 has 8 divisors (see below), whose sum is σ = 43297760. Its totient is φ = 41150592.

The previous prime is 42221989. The next prime is 42222023. The reversal of 42222001 is 10022224.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42222001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42222041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28210 + ... + 29668.

It is an arithmetic number, because the mean of its divisors is an integer number (5412220).

Almost surely, 2^42222001 is an apocalyptic number.

It is an amenable number.

42222001 is a deficient number, since it is larger than the sum of its proper divisors (1075759).

42222001 is a wasteful number, since it uses less digits than its factorization.

42222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 42222001 is about 6497.8458738262. The cubic root of 42222001 is about 348.2140341192.

Adding to 42222001 its reverse (10022224), we get a palindrome (52244225).

The spelling of 42222001 in words is "forty-two million, two hundred twenty-two thousand, one".