42122001 has 8 divisors (see below), whose sum is σ = 56521024. Its totient is φ = 27902160.

The previous prime is 42121997. The next prime is 42122023. The reversal of 42122001 is 10022124.

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

It is not a de Polignac number, because 42122001 - 2² = 42121997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42122051) 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, 44245 + ... + 45186.

It is an arithmetic number, because the mean of its divisors is an integer number (7065128).

Almost surely, 2^42122001 is an apocalyptic number.

It is an amenable number.

42122001 is a deficient number, since it is larger than the sum of its proper divisors (14399023).

42122001 is a wasteful number, since it uses less digits than its factorization.

42122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89591.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 42122001 is about 6490.1464544338. The cubic root of 42122001 is about 347.9389095432.

Adding to 42122001 its reverse (10022124), we get a palindrome (52144125).

It can be divided in two parts, 421 and 22001, that added together give a palindrome (22422).

The spelling of 42122001 in words is "forty-two million, one hundred twenty-two thousand, one".