42143551121 has 8 divisors (see below), whose sum is σ = 49717737984. Its totient is φ = 34957784160.

The previous prime is 42143551117. The next prime is 42143551159. The reversal of 42143551121 is 12115534124.

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 42143551121 - 2² = 42143551117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42143551111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97104740 + ... + 97105173.

It is an arithmetic number, because the mean of its divisors is an integer number (6214717248).

Almost surely, 2^42143551121 is an apocalyptic number.

It is an amenable number.

42143551121 is a deficient number, since it is larger than the sum of its proper divisors (7574186863).

42143551121 is a wasteful number, since it uses less digits than its factorization.

42143551121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194209951.

The product of its digits is 4800, while the sum is 29.

The spelling of 42143551121 in words is "forty-two billion, one hundred forty-three million, five hundred fifty-one thousand, one hundred twenty-one".