1001042042421 has 8 divisors (see below), whose sum is σ = 1334991461184. Its totient is φ = 667226992640.

The previous prime is 1001042042419. The next prime is 1001042042437. The reversal of 1001042042421 is 1242402401001.

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

It is a cyclic number.

It is not a de Polignac number, because 1001042042421 - 2¹ = 1001042042419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001042042401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33574860 + ... + 33604661.

It is an arithmetic number, because the mean of its divisors is an integer number (166873932648).

Almost surely, 2^{1001042042421} is an apocalyptic number.

It is an amenable number.

1001042042421 is a deficient number, since it is larger than the sum of its proper divisors (333949418763).

1001042042421 is an equidigital number, since it uses as much as digits as its factorization.

1001042042421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67184491.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1001042042421 its reverse (1242402401001), we get a palindrome (2243444443422).

The spelling of 1001042042421 in words is "one trillion, one billion, forty-two million, forty-two thousand, four hundred twenty-one".