1242018578782 has 8 divisors (see below), whose sum is σ = 1888548798096. Its totient is φ = 612502312752.

The previous prime is 1242018578753. The next prime is 1242018578819. The reversal of 1242018578782 is 2878758102421.

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

It is a super-2 number, since 2×1242018578782² (a number of 25 digits) contains 22 as substring.

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, 4253488138 + ... + 4253488429.

It is an arithmetic number, because the mean of its divisors is an integer number (236068599762).

Almost surely, 2^{1242018578782} is an apocalyptic number.

1242018578782 is a deficient number, since it is larger than the sum of its proper divisors (646530219314).

1242018578782 is an equidigital number, since it uses as much as digits as its factorization.

1242018578782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8506976642.

The product of its (nonzero) digits is 4014080, while the sum is 55.

The spelling of 1242018578782 in words is "one trillion, two hundred forty-two billion, eighteen million, five hundred seventy-eight thousand, seven hundred eighty-two".