71843771242 has 32 divisors (see below), whose sum is σ = 116985254400. Its totient is φ = 32983196400.

The previous prime is 71843771159. The next prime is 71843771287. The reversal of 71843771242 is 24217734817.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 71843771192 and 71843771201.

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 15 ways as a sum of consecutive naturals, for example, 66484 + ... + 384847.

It is an arithmetic number, because the mean of its divisors is an integer number (3655789200).

Almost surely, 2^71843771242 is an apocalyptic number.

71843771242 is a deficient number, since it is larger than the sum of its proper divisors (45141483158).

71843771242 is a wasteful number, since it uses less digits than its factorization.

71843771242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451482.

The product of its digits is 526848, while the sum is 46.

The spelling of 71843771242 in words is "seventy-one billion, eight hundred forty-three million, seven hundred seventy-one thousand, two hundred forty-two".