42166541123 has 8 divisors (see below), whose sum is σ = 48850474848. Its totient is φ = 35647642944.

The previous prime is 42166541119. The next prime is 42166541147. The reversal of 42166541123 is 32114566124.

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 42166541123 - 2² = 42166541119 is a prime.

It is a super-2 number, since 2×42166541123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42166541173) 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, 41258336 + ... + 41259357.

It is an arithmetic number, because the mean of its divisors is an integer number (6106309356).

Almost surely, 2^42166541123 is an apocalyptic number.

42166541123 is a deficient number, since it is larger than the sum of its proper divisors (6683933725).

42166541123 is an equidigital number, since it uses as much as digits as its factorization.

42166541123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82517773.

The product of its digits is 34560, while the sum is 35.

The spelling of 42166541123 in words is "forty-two billion, one hundred sixty-six million, five hundred forty-one thousand, one hundred twenty-three".