42505453187 has 4 divisors (see below), whose sum is σ = 42506084496. Its totient is φ = 42504821880.

The previous prime is 42505453103. The next prime is 42505453219. The reversal of 42505453187 is 78135450524.

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 42505453187 - 2⁸ = 42505452931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42505459187) 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 3 ways as a sum of consecutive naturals, for example, 200708 + ... + 353969.

It is an arithmetic number, because the mean of its divisors is an integer number (10626521124).

Almost surely, 2^42505453187 is an apocalyptic number.

42505453187 is a deficient number, since it is larger than the sum of its proper divisors (631309).

42505453187 is an equidigital number, since it uses as much as digits as its factorization.

42505453187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631308.

The product of its (nonzero) digits is 672000, while the sum is 44.

The spelling of 42505453187 in words is "forty-two billion, five hundred five million, four hundred fifty-three thousand, one hundred eighty-seven".