1187240305975 has 12 divisors (see below), whose sum is σ = 1474821045144. Its totient is φ = 948087041120.

The previous prime is 1187240305957. The next prime is 1187240306011. The reversal of 1187240305975 is 5795030427811.

It is not a de Polignac number, because 1187240305975 - 2⁷ = 1187240305847 is a prime.

It is a super-2 number, since 2×1187240305975² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 42615889 + ... + 42643738.

It is an arithmetic number, because the mean of its divisors is an integer number (122901753762).

Almost surely, 2^{1187240305975} is an apocalyptic number.

1187240305975 is a deficient number, since it is larger than the sum of its proper divisors (287580739169).

1187240305975 is an equidigital number, since it uses as much as digits as its factorization.

1187240305975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85260194 (or 85260189 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 1187240305975 in words is "one trillion, one hundred eighty-seven billion, two hundred forty million, three hundred five thousand, nine hundred seventy-five".