42354205609 has 2 divisors, whose sum is σ = 42354205610. Its totient is φ = 42354205608.

The previous prime is 42354205601. The next prime is 42354205667. The reversal of 42354205609 is 90650245324.

42354205609 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 can be written as a sum of positive squares in only one way, i.e., 31286534400 + 11067671209 = 176880^2 + 105203^2 .

It is a cyclic number.

It is not a de Polignac number, because 42354205609 - 2³ = 42354205601 is a prime.

It is not a weakly prime, because it can be changed into another prime (42354205601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21177102804 + 21177102805.

It is an arithmetic number, because the mean of its divisors is an integer number (21177102805).

Almost surely, 2^42354205609 is an apocalyptic number.

It is an amenable number.

42354205609 is a deficient number, since it is larger than the sum of its proper divisors (1).

42354205609 is an equidigital number, since it uses as much as digits as its factorization.

42354205609 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 40.

The spelling of 42354205609 in words is "forty-two billion, three hundred fifty-four million, two hundred five thousand, six hundred nine".