1242477077566 has 8 divisors (see below), whose sum is σ = 1863759909960. Its totient is φ = 621223774248.

The previous prime is 1242477077557. The next prime is 1242477077587. The reversal of 1242477077566 is 6657707742421.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1242477077566.

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 3 ways as a sum of consecutive naturals, for example, 7276776 + ... + 7445563.

It is an arithmetic number, because the mean of its divisors is an integer number (232969988745).

Almost surely, 2^{1242477077566} is an apocalyptic number.

1242477077566 is a deficient number, since it is larger than the sum of its proper divisors (621282832394).

1242477077566 is a wasteful number, since it uses less digits than its factorization.

1242477077566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14764538.

The product of its (nonzero) digits is 27659520, while the sum is 58.

The spelling of 1242477077566 in words is "one trillion, two hundred forty-two billion, four hundred seventy-seven million, seventy-seven thousand, five hundred sixty-six".