42353923889 has 2 divisors, whose sum is σ = 42353923890. Its totient is φ = 42353923888.

The previous prime is 42353923877. The next prime is 42353923933. The reversal of 42353923889 is 98832935324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36030493489 + 6323430400 = 189817^2 + 79520^2 .

It is a cyclic number.

It is not a de Polignac number, because 42353923889 - 2²⁴ = 42337146673 is a prime.

It is a super-3 number, since 3×42353923889³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (42353923849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21176961944 + 21176961945.

It is an arithmetic number, because the mean of its divisors is an integer number (21176961945).

Almost surely, 2^42353923889 is an apocalyptic number.

It is an amenable number.

42353923889 is a deficient number, since it is larger than the sum of its proper divisors (1).

42353923889 is an equidigital number, since it uses as much as digits as its factorization.

42353923889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 56.

The spelling of 42353923889 in words is "forty-two billion, three hundred fifty-three million, nine hundred twenty-three thousand, eight hundred eighty-nine".