42161006123 has 2 divisors, whose sum is σ = 42161006124. Its totient is φ = 42161006122.

The previous prime is 42161006119. The next prime is 42161006141. The reversal of 42161006123 is 32160016124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42161006123 - 2² = 42161006119 is a prime.

It is a super-2 number, since 2×42161006123² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42161006092 and 42161006101.

It is not a weakly prime, because it can be changed into another prime (42161005123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21080503061 + 21080503062.

It is an arithmetic number, because the mean of its divisors is an integer number (21080503062).

Almost surely, 2^42161006123 is an apocalyptic number.

42161006123 is a deficient number, since it is larger than the sum of its proper divisors (1).

42161006123 is an equidigital number, since it uses as much as digits as its factorization.

42161006123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 42161006123 in words is "forty-two billion, one hundred sixty-one million, six thousand, one hundred twenty-three".