42004021053503 has 8 divisors (see below), whose sum is σ = 42040575981360. Its totient is φ = 41967468094720.

The previous prime is 42004021053499. The next prime is 42004021053571. The reversal of 42004021053503 is 30535012040024.

It is a happy number.

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 42004021053503 - 2² = 42004021053499 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 (42004021053803) 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, 43931513 + ... + 44877453.

It is an arithmetic number, because the mean of its divisors is an integer number (5255071997670).

Almost surely, 2^{42004021053503} is an apocalyptic number.

42004021053503 is a deficient number, since it is larger than the sum of its proper divisors (36554927857).

42004021053503 is a wasteful number, since it uses less digits than its factorization.

42004021053503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984537.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 42004021053503 its reverse (30535012040024), we get a palindrome (72539033093527).

The spelling of 42004021053503 in words is "forty-two trillion, four billion, twenty-one million, fifty-three thousand, five hundred three".