3978241758242 has 8 divisors (see below), whose sum is σ = 5967565442076. Its totient is φ = 1989053277552.

The previous prime is 3978241758223. The next prime is 3978241758247. The reversal of 3978241758242 is 2428571428793.

It is a happy number.

3978241758242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2960364566041 + 1017877192201 = 1720571^2 + 1008899^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3978241758247) 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, 33727193 + ... + 33844940.

Almost surely, 2^{3978241758242} is an apocalyptic number.

3978241758242 is a deficient number, since it is larger than the sum of its proper divisors (1989323683834).

3978241758242 is a wasteful number, since it uses less digits than its factorization.

3978241758242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67601572.

The product of its digits is 54190080, while the sum is 62.

The spelling of 3978241758242 in words is "three trillion, nine hundred seventy-eight billion, two hundred forty-one million, seven hundred fifty-eight thousand, two hundred forty-two".