42111124129 has 8 divisors (see below), whose sum is σ = 43694784512. Its totient is φ = 40541541120.

The previous prime is 42111124127. The next prime is 42111124157. The reversal of 42111124129 is 92142111124.

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 42111124129 - 2¹ = 42111124127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42111124097 and 42111124106.

It is not an unprimeable number, because it can be changed into a prime (42111124127) 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, 3513249 + ... + 3525214.

It is an arithmetic number, because the mean of its divisors is an integer number (5461848064).

Almost surely, 2^42111124129 is an apocalyptic number.

It is an amenable number.

42111124129 is a deficient number, since it is larger than the sum of its proper divisors (1583660383).

42111124129 is a wasteful number, since it uses less digits than its factorization.

42111124129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7038687.

The product of its digits is 1152, while the sum is 28.

The spelling of 42111124129 in words is "forty-two billion, one hundred eleven million, one hundred twenty-four thousand, one hundred twenty-nine".