42154342099 has 2 divisors, whose sum is σ = 42154342100. Its totient is φ = 42154342098.

The previous prime is 42154342073. The next prime is 42154342123. The reversal of 42154342099 is 99024345124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42154342099 - 2²³ = 42145953491 is a prime.

It is not a weakly prime, because it can be changed into another prime (42154342199) 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, 21077171049 + 21077171050.

It is an arithmetic number, because the mean of its divisors is an integer number (21077171050).

Almost surely, 2^42154342099 is an apocalyptic number.

42154342099 is a deficient number, since it is larger than the sum of its proper divisors (1).

42154342099 is an equidigital number, since it uses as much as digits as its factorization.

42154342099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 42154342099 in words is "forty-two billion, one hundred fifty-four million, three hundred forty-two thousand, ninety-nine".