42331890187 has 2 divisors, whose sum is σ = 42331890188. Its totient is φ = 42331890186.

The previous prime is 42331890173. The next prime is 42331890191. The reversal of 42331890187 is 78109813324.

42331890187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42331890187 - 2¹⁵ = 42331857419 is a prime.

It is not a weakly prime, because it can be changed into another prime (42331890787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21165945093 + 21165945094.

It is an arithmetic number, because the mean of its divisors is an integer number (21165945094).

Almost surely, 2^42331890187 is an apocalyptic number.

42331890187 is a deficient number, since it is larger than the sum of its proper divisors (1).

42331890187 is an equidigital number, since it uses as much as digits as its factorization.

42331890187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 42331890187 in words is "forty-two billion, three hundred thirty-one million, eight hundred ninety thousand, one hundred eighty-seven".