42004121503 has 8 divisors (see below), whose sum is σ = 44238161520. Its totient is φ = 39772411200.

The previous prime is 42004121483. The next prime is 42004121521. The reversal of 42004121503 is 30512140024.

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

It is not a de Polignac number, because 42004121503 - 2²⁵ = 41970567071 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 (42004121303) 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, 545350 + ... + 617587.

It is an arithmetic number, because the mean of its divisors is an integer number (5529770190).

Almost surely, 2^42004121503 is an apocalyptic number.

42004121503 is a deficient number, since it is larger than the sum of its proper divisors (2234040017).

42004121503 is a wasteful number, since it uses less digits than its factorization.

42004121503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164857.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 42004121503 its reverse (30512140024), we get a palindrome (72516261527).

The spelling of 42004121503 in words is "forty-two billion, four million, one hundred twenty-one thousand, five hundred three".