1242280783642 has 8 divisors (see below), whose sum is σ = 1867247503776. Its totient is φ = 619864949052.

The previous prime is 1242280783573. The next prime is 1242280783643. The reversal of 1242280783642 is 2463870822421.

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

It is a super-2 number, since 2×1242280783642² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1242280783643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637720168 + ... + 637722115.

It is an arithmetic number, because the mean of its divisors is an integer number (233405937972).

Almost surely, 2^{1242280783642} is an apocalyptic number.

1242280783642 is a deficient number, since it is larger than the sum of its proper divisors (624966720134).

1242280783642 is a wasteful number, since it uses less digits than its factorization.

1242280783642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275442772.

The product of its (nonzero) digits is 2064384, while the sum is 49.

The spelling of 1242280783642 in words is "one trillion, two hundred forty-two billion, two hundred eighty million, seven hundred eighty-three thousand, six hundred forty-two".