42112541993 has 8 divisors (see below), whose sum is σ = 42531652800. Its totient is φ = 41693628528.

The previous prime is 42112541971. The next prime is 42112542079. The reversal of 42112541993 is 39914521124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42112541993 - 2²² = 42108347689 is a prime.

It is a super-2 number, since 2×42112541993² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42112541993.

It is not an unprimeable number, because it can be changed into a prime (42112541953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399803 + ... + 494031.

It is an arithmetic number, because the mean of its divisors is an integer number (5316456600).

Almost surely, 2^42112541993 is an apocalyptic number.

It is an amenable number.

42112541993 is a deficient number, since it is larger than the sum of its proper divisors (419110807).

42112541993 is a wasteful number, since it uses less digits than its factorization.

42112541993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98671.

The product of its digits is 77760, while the sum is 41.

The spelling of 42112541993 in words is "forty-two billion, one hundred twelve million, five hundred forty-one thousand, nine hundred ninety-three".