1247420598977 has 8 divisors (see below), whose sum is σ = 1474782974400. Its totient is φ = 1032348081744.

The previous prime is 1247420598959. The next prime is 1247420598989. The reversal of 1247420598977 is 7798950247421.

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

It is not a de Polignac number, because 1247420598977 - 2²⁴ = 1247403821761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1247420598077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3072464327 + ... + 3072464732.

It is an arithmetic number, because the mean of its divisors is an integer number (184347871800).

Almost surely, 2^{1247420598977} is an apocalyptic number.

It is an amenable number.

1247420598977 is a deficient number, since it is larger than the sum of its proper divisors (227362375423).

1247420598977 is an equidigital number, since it uses as much as digits as its factorization.

1247420598977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144929095.

The product of its (nonzero) digits is 71124480, while the sum is 65.

The spelling of 1247420598977 in words is "one trillion, two hundred forty-seven billion, four hundred twenty million, five hundred ninety-eight thousand, nine hundred seventy-seven".