1242364666 has 16 divisors (see below), whose sum is σ = 1970438400. Its totient is φ = 585845568.

The previous prime is 1242364663. The next prime is 1242364681. The reversal of 1242364666 is 6664632421.

It is not an unprimeable number, because it can be changed into a prime (1242364661) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 64831 + ... + 81778.

It is an arithmetic number, because the mean of its divisors is an integer number (123152400).

Almost surely, 2^1242364666 is an apocalyptic number.

1242364666 is a deficient number, since it is larger than the sum of its proper divisors (728073734).

1242364666 is a wasteful number, since it uses less digits than its factorization.

1242364666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146853.

The product of its digits is 248832, while the sum is 40.

The square root of 1242364666 is about 35247.1937322675. The cubic root of 1242364666 is about 1075.0195535654.

The spelling of 1242364666 in words is "one billion, two hundred forty-two million, three hundred sixty-four thousand, six hundred sixty-six".