42542415503 has 4 divisors (see below), whose sum is σ = 48619903440. Its totient is φ = 36464927568.

The previous prime is 42542415437. The next prime is 42542415523. The reversal of 42542415503 is 30551424524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42542415503 - 2¹⁰ = 42542414479 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 (42542415523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3038743958 + ... + 3038743971.

It is an arithmetic number, because the mean of its divisors is an integer number (12154975860).

Almost surely, 2^42542415503 is an apocalyptic number.

42542415503 is a deficient number, since it is larger than the sum of its proper divisors (6077487937).

42542415503 is an equidigital number, since it uses as much as digits as its factorization.

42542415503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6077487936.

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 42542415503 in words is "forty-two billion, five hundred forty-two million, four hundred fifteen thousand, five hundred three".