3981217282442 has 8 divisors (see below), whose sum is σ = 5971864139076. Its totient is φ = 1990595902752.

The previous prime is 3981217282387. The next prime is 3981217282459. The reversal of 3981217282442 is 2442827121893.

It can be written as a sum of positive squares in 2 ways, for example, as 3922138632721 + 59078649721 = 1980439^2 + 243061^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5973653 + ... + 6606584.

Almost surely, 2^{3981217282442} is an apocalyptic number.

3981217282442 is a deficient number, since it is larger than the sum of its proper divisors (1990646856634).

3981217282442 is a wasteful number, since it uses less digits than its factorization.

3981217282442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12738472.

The product of its digits is 3096576, while the sum is 53.

The spelling of 3981217282442 in words is "three trillion, nine hundred eighty-one billion, two hundred seventeen million, two hundred eighty-two thousand, four hundred forty-two".