1242575705 has 16 divisors (see below), whose sum is σ = 1727451264. Its totient is φ = 840378240.

The previous prime is 1242575689. The next prime is 1242575717. The reversal of 1242575705 is 5075752421.

It is not a de Polignac number, because 1242575705 - 2⁴ = 1242575689 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240611 + ... + 245720.

It is an arithmetic number, because the mean of its divisors is an integer number (107965704).

Almost surely, 2^1242575705 is an apocalyptic number.

It is an amenable number.

1242575705 is a deficient number, since it is larger than the sum of its proper divisors (484875559).

1242575705 is an equidigital number, since it uses as much as digits as its factorization.

1242575705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486416.

The product of its (nonzero) digits is 98000, while the sum is 38.

The square root of 1242575705 is about 35250.1873044669. The cubic root of 1242575705 is about 1075.0804208810.

The spelling of 1242575705 in words is "one billion, two hundred forty-two million, five hundred seventy-five thousand, seven hundred five".