1242663275 has 24 divisors (see below), whose sum is σ = 1796983200. Its totient is φ = 852106080.

The previous prime is 1242663187. The next prime is 1242663293. The reversal of 1242663275 is 5723662421.

It is not a de Polignac number, because 1242663275 - 2¹⁰ = 1242662251 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63884 + ... + 81033.

It is an arithmetic number, because the mean of its divisors is an integer number (74874300).

Almost surely, 2^1242663275 is an apocalyptic number.

1242663275 is a deficient number, since it is larger than the sum of its proper divisors (554319925).

1242663275 is an equidigital number, since it uses as much as digits as its factorization.

1242663275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144948 (or 144929 counting only the distinct ones).

The product of its digits is 120960, while the sum is 38.

The square root of 1242663275 is about 35251.4294036426. The cubic root of 1242663275 is about 1075.1056755678.

The spelling of 1242663275 in words is "one billion, two hundred forty-two million, six hundred sixty-three thousand, two hundred seventy-five".