42512131503 has 32 divisors (see below), whose sum is σ = 64734996480. Its totient is φ = 27558014400.

The previous prime is 42512131471. The next prime is 42512131553. The reversal of 42512131503 is 30513121524.

42512131503 is a `hidden beast` number, since 4 + 2 + 5 + 121 + 31 + 503 = 666.

It is not a de Polignac number, because 42512131503 - 2⁵ = 42512131471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42512131553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176803 + ... + 341003.

It is an arithmetic number, because the mean of its divisors is an integer number (2022968640).

Almost surely, 2^42512131503 is an apocalyptic number.

42512131503 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42512131503 is a deficient number, since it is larger than the sum of its proper divisors (22222864977).

42512131503 is a wasteful number, since it uses less digits than its factorization.

42512131503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164476 (or 164470 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 42512131503 in words is "forty-two billion, five hundred twelve million, one hundred thirty-one thousand, five hundred three".