42655553817242 has 8 divisors (see below), whose sum is σ = 63994553919732. Its totient is φ = 21324035844000.

The previous prime is 42655553817203. The next prime is 42655553817271. The reversal of 42655553817242 is 24271835555624.

It can be written as a sum of positive squares in 2 ways, for example, as 29732384413081 + 12923169404161 = 5452741^2 + 3594881^2 .

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1870518059 + ... + 1870540862.

Almost surely, 2^{42655553817242} is an apocalyptic number.

42655553817242 is a deficient number, since it is larger than the sum of its proper divisors (21339000102490).

42655553817242 is a wasteful number, since it uses less digits than its factorization.

42655553817242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741064624.

The product of its digits is 80640000, while the sum is 59.

The spelling of 42655553817242 in words is "forty-two trillion, six hundred fifty-five billion, five hundred fifty-three million, eight hundred seventeen thousand, two hundred forty-two".