1000042001 has 32 divisors (see below), whose sum is σ = 1224253440. Its totient is φ = 798393024.

The previous prime is 1000041997. The next prime is 1000042007. The reversal of 1000042001 is 1002400001.

It is a cyclic number.

It is not a de Polignac number, because 1000042001 - 2² = 1000041997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000042001.

It is not an unprimeable number, because it can be changed into a prime (1000042007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1390520 + ... + 1391238.

It is an arithmetic number, because the mean of its divisors is an integer number (38257920).

Almost surely, 2^1000042001 is an apocalyptic number.

It is an amenable number.

1000042001 is a deficient number, since it is larger than the sum of its proper divisors (224211439).

1000042001 is a wasteful number, since it uses less digits than its factorization.

1000042001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1000042001 is about 31623.4406888308. The cubic root of 1000042001 is about 1000.0140001373.

Adding to 1000042001 its reverse (1002400001), we get a palindrome (2002442002).

The spelling of 1000042001 in words is "one billion, forty-two thousand, one".