1242358436666 has 8 divisors (see below), whose sum is σ = 1863765746784. Its totient is φ = 621103187740.

The previous prime is 1242358436651. The next prime is 1242358436729. The reversal of 1242358436666 is 6666348532421.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37994870 + ... + 38027553.

It is an arithmetic number, because the mean of its divisors is an integer number (232970718348).

Almost surely, 2^{1242358436666} is an apocalyptic number.

1242358436666 is a deficient number, since it is larger than the sum of its proper divisors (621407310118).

1242358436666 is an equidigital number, since it uses as much as digits as its factorization.

1242358436666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76030596.

The product of its digits is 29859840, while the sum is 56.

The spelling of 1242358436666 in words is "one trillion, two hundred forty-two billion, three hundred fifty-eight million, four hundred thirty-six thousand, six hundred sixty-six".