42004013123 has 8 divisors (see below), whose sum is σ = 42634449600. Its totient is φ = 41373680040.

The previous prime is 42004013099. The next prime is 42004013131. The reversal of 42004013123 is 32131040024.

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 42004013123 - 2²⁶ = 41936904259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42004013095 and 42004013104.

It is not an unprimeable number, because it can be changed into a prime (42004010123) 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, 1292528 + ... + 1324626.

It is an arithmetic number, because the mean of its divisors is an integer number (5329306200).

Almost surely, 2^42004013123 is an apocalyptic number.

42004013123 is a deficient number, since it is larger than the sum of its proper divisors (630436477).

42004013123 is a wasteful number, since it uses less digits than its factorization.

42004013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51697.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 42004013123 its reverse (32131040024), we get a palindrome (74135053147).

The spelling of 42004013123 in words is "forty-two billion, four million, thirteen thousand, one hundred twenty-three".