1242446305 has 8 divisors (see below), whose sum is σ = 1491156072. Its totient is φ = 993810048.

The previous prime is 1242446297. The next prime is 1242446321. The reversal of 1242446305 is 5036442421.

It can be written as a sum of positive squares in 4 ways, for example, as 61905424 + 1180540881 = 7868^2 + 34359^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1242446305 - 2³ = 1242446297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30757 + ... + 58573.

It is an arithmetic number, because the mean of its divisors is an integer number (186394509).

Almost surely, 2^1242446305 is an apocalyptic number.

It is an amenable number.

1242446305 is a deficient number, since it is larger than the sum of its proper divisors (248709767).

1242446305 is an equidigital number, since it uses as much as digits as its factorization.

1242446305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36755.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 1242446305 is about 35248.3518054391. The cubic root of 1242446305 is about 1075.0431004893.

Adding to 1242446305 its reverse (5036442421), we get a palindrome (6278888726).

The spelling of 1242446305 in words is "one billion, two hundred forty-two million, four hundred forty-six thousand, three hundred five".