442251261243 has 12 divisors (see below), whose sum is σ = 696880775448. Its totient is φ = 268031067360.

The previous prime is 442251261233. The next prime is 442251261271. The reversal of 442251261243 is 342162152244.

442251261243 is a `hidden beast` number, since 4 + 4 + 2 + 25 + 12 + 612 + 4 + 3 = 666.

It is not a de Polignac number, because 442251261243 - 2⁸ = 442251260987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442251261198 and 442251261207.

It is not an unprimeable number, because it can be changed into a prime (442251261233) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2233592130 + ... + 2233592327.

It is an arithmetic number, because the mean of its divisors is an integer number (58073397954).

Almost surely, 2^442251261243 is an apocalyptic number.

442251261243 is a deficient number, since it is larger than the sum of its proper divisors (254629514205).

442251261243 is a wasteful number, since it uses less digits than its factorization.

442251261243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467184474 (or 4467184471 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The spelling of 442251261243 in words is "four hundred forty-two billion, two hundred fifty-one million, two hundred sixty-one thousand, two hundred forty-three".