2042104120021 has 8 divisors (see below), whose sum is σ = 2414310289920. Its totient is φ = 1690017202608.

The previous prime is 2042104119997. The next prime is 2042104120093. The reversal of 2042104120021 is 1200214012402.

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

It is not a de Polignac number, because 2042104120021 - 2¹³ = 2042104111829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042104160021) 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, 5029812901 + ... + 5029813306.

It is an arithmetic number, because the mean of its divisors is an integer number (301788786240).

Almost surely, 2^{2042104120021} is an apocalyptic number.

It is an amenable number.

2042104120021 is a deficient number, since it is larger than the sum of its proper divisors (372206169899).

2042104120021 is a wasteful number, since it uses less digits than its factorization.

2042104120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10059626243.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2042104120021 its reverse (1200214012402), we get a palindrome (3242318132423).

The spelling of 2042104120021 in words is "two trillion, forty-two billion, one hundred four million, one hundred twenty thousand, twenty-one".