42190931051 has 2 divisors, whose sum is σ = 42190931052. Its totient is φ = 42190931050.

The previous prime is 42190930987. The next prime is 42190931077. The reversal of 42190931051 is 15013909124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42190931051 - 2⁶ = 42190930987 is a prime.

It is not a weakly prime, because it can be changed into another prime (42193931051) 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 as a sum of consecutive naturals, namely, 21095465525 + 21095465526.

It is an arithmetic number, because the mean of its divisors is an integer number (21095465526).

Almost surely, 2^42190931051 is an apocalyptic number.

42190931051 is a deficient number, since it is larger than the sum of its proper divisors (1).

42190931051 is an equidigital number, since it uses as much as digits as its factorization.

42190931051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 42190931051 in words is "forty-two billion, one hundred ninety million, nine hundred thirty-one thousand, fifty-one".