42000023189 has 2 divisors, whose sum is σ = 42000023190. Its totient is φ = 42000023188.

The previous prime is 42000023123. The next prime is 42000023209. The reversal of 42000023189 is 98132000024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33207772900 + 8792250289 = 182230^2 + 93767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42000023189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42000022189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21000011594 + 21000011595.

It is an arithmetic number, because the mean of its divisors is an integer number (21000011595).

Almost surely, 2^42000023189 is an apocalyptic number.

It is an amenable number.

42000023189 is a deficient number, since it is larger than the sum of its proper divisors (1).

42000023189 is an equidigital number, since it uses as much as digits as its factorization.

42000023189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 42000023189 in words is "forty-two billion, twenty-three thousand, one hundred eighty-nine".