42154405099 has 2 divisors, whose sum is σ = 42154405100. Its totient is φ = 42154405098.

The previous prime is 42154405093. The next prime is 42154405123. The reversal of 42154405099 is 99050445124.

42154405099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42154405099 - 2³ = 42154405091 is a prime.

It is not a weakly prime, because it can be changed into another prime (42154405091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21077202549 + 21077202550.

It is an arithmetic number, because the mean of its divisors is an integer number (21077202550).

Almost surely, 2^42154405099 is an apocalyptic number.

42154405099 is a deficient number, since it is larger than the sum of its proper divisors (1).

42154405099 is an equidigital number, since it uses as much as digits as its factorization.

42154405099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 42154405099 in words is "forty-two billion, one hundred fifty-four million, four hundred five thousand, ninety-nine".