1242939299648 has 28 divisors (see below), whose sum is σ = 2475626694660. Its totient is φ = 619159345152.

The previous prime is 1242939299629. The next prime is 1242939299653. The reversal of 1242939299648 is 8469929392421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 451465735744 + 791473563904 = 671912^2 + 889648^2 .

It is a congruent number.

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, 36081161 + ... + 36115592.

It is an arithmetic number, because the mean of its divisors is an integer number (88415239095).

Almost surely, 2^{1242939299648} is an apocalyptic number.

It is an amenable number.

1242939299648 is a deficient number, since it is larger than the sum of its proper divisors (1232687395012).

1242939299648 is an equidigital number, since it uses as much as digits as its factorization.

1242939299648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72197034 (or 72197024 counting only the distinct ones).

The product of its digits is 120932352, while the sum is 68.

The spelling of 1242939299648 in words is "one trillion, two hundred forty-two billion, nine hundred thirty-nine million, two hundred ninety-nine thousand, six hundred forty-eight".