1305942472491 has 8 divisors (see below), whose sum is σ = 1778304643584. Its totient is φ = 852104308200.

The previous prime is 1305942472453. The next prime is 1305942472501. The reversal of 1305942472491 is 1942742495031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1305942472491 - 2⁹ = 1305942471979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1305942472411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4631001535 + ... + 4631001816.

It is an arithmetic number, because the mean of its divisors is an integer number (222288080448).

Almost surely, 2^{1305942472491} is an apocalyptic number.

1305942472491 is a deficient number, since it is larger than the sum of its proper divisors (472362171093).

1305942472491 is an equidigital number, since it uses as much as digits as its factorization.

1305942472491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9262003401.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 1305942472491 in words is "one trillion, three hundred five billion, nine hundred forty-two million, four hundred seventy-two thousand, four hundred ninety-one".