1871121912442 has 8 divisors (see below), whose sum is σ = 2817039632832. Its totient is φ = 932108701500.

The previous prime is 1871121912437. The next prime is 1871121912461. The reversal of 1871121912442 is 2442191211781.

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

It is a super-2 number, since 2×1871121912442² (a number of 25 digits) contains 22 as substring.

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, 1726126684 + ... + 1726127767.

It is an arithmetic number, because the mean of its divisors is an integer number (352129954104).

Almost surely, 2^{1871121912442} is an apocalyptic number.

1871121912442 is a deficient number, since it is larger than the sum of its proper divisors (945917720390).

1871121912442 is a wasteful number, since it uses less digits than its factorization.

1871121912442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452254724.

The product of its digits is 64512, while the sum is 43.

The spelling of 1871121912442 in words is "one trillion, eight hundred seventy-one billion, one hundred twenty-one million, nine hundred twelve thousand, four hundred forty-two".