12503532542 has 4 divisors (see below), whose sum is σ = 18755298816. Its totient is φ = 6251766270.

The previous prime is 12503532541. The next prime is 12503532551. The reversal of 12503532542 is 24523530521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24523530521 = 7 ⋅3503361503.

It is a junction number, because it is equal to n+sod(n) for n = 12503532499 and 12503532508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12503532541) 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 as a sum of consecutive naturals, namely, 3125883134 + ... + 3125883137.

It is an arithmetic number, because the mean of its divisors is an integer number (4688824704).

Almost surely, 2^12503532542 is an apocalyptic number.

12503532542 is a deficient number, since it is larger than the sum of its proper divisors (6251766274).

12503532542 is an equidigital number, since it uses as much as digits as its factorization.

12503532542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6251766273.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 12503532542 in words is "twelve billion, five hundred three million, five hundred thirty-two thousand, five hundred forty-two".