42121104023 has 8 divisors (see below), whose sum is σ = 43019684400. Its totient is φ = 41231835648.

The previous prime is 42121104019. The next prime is 42121104061. The reversal of 42121104023 is 32040112124.

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 42121104023 - 2² = 42121104019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42121103986 and 42121104004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42121194023) 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, 2318858 + ... + 2336951.

It is an arithmetic number, because the mean of its divisors is an integer number (5377460550).

Almost surely, 2^42121104023 is an apocalyptic number.

42121104023 is a deficient number, since it is larger than the sum of its proper divisors (898580377).

42121104023 is a wasteful number, since it uses less digits than its factorization.

42121104023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656001.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 42121104023 its reverse (32040112124), we get a palindrome (74161216147).

The spelling of 42121104023 in words is "forty-two billion, one hundred twenty-one million, one hundred four thousand, twenty-three".