1242676566 has 20 divisors (see below), whose sum is σ = 2784516372. Its totient is φ = 414225468.

The previous prime is 1242676549. The next prime is 1242676597. The reversal of 1242676566 is 6656762421.

1242676566 is a `hidden beast` number, since 1 + 24 + 2 + 67 + 6 + 566 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3835260 + ... + 3835583.

Almost surely, 2^1242676566 is an apocalyptic number.

1242676566 is an abundant number, since it is smaller than the sum of its proper divisors (1541839806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242676566 is an equidigital number, since it uses as much as digits as its factorization.

1242676566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7670857 (or 7670848 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 1242676566 is about 35251.6179203168. The cubic root of 1242676566 is about 1075.1095085125.

The spelling of 1242676566 in words is "one billion, two hundred forty-two million, six hundred seventy-six thousand, five hundred sixty-six".