68442001 has 4 divisors (see below), whose sum is σ = 70802100. Its totient is φ = 66081904.

The previous prime is 68441999. The next prime is 68442029. The reversal of 68442001 is 10024486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10024486 = 2 ⋅5012243.

It can be written as a sum of positive squares in 2 ways, for example, as 57017601 + 11424400 = 7551^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 68442001 - 2¹ = 68441999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68442091) 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 3 ways as a sum of consecutive naturals, for example, 1180006 + ... + 1180063.

It is an arithmetic number, because the mean of its divisors is an integer number (17700525).

Almost surely, 2^68442001 is an apocalyptic number.

It is an amenable number.

68442001 is a deficient number, since it is larger than the sum of its proper divisors (2360099).

68442001 is a wasteful number, since it uses less digits than its factorization.

68442001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360098.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 68442001 is about 8272.9680889026. The cubic root of 68442001 is about 409.0479615685.

Adding to 68442001 its reverse (10024486), we get a palindrome (78466487).

The spelling of 68442001 in words is "sixty-eight million, four hundred forty-two thousand, one".