42345505369 has 2 divisors, whose sum is σ = 42345505370. Its totient is φ = 42345505368.

The previous prime is 42345505357. The next prime is 42345505373. The reversal of 42345505369 is 96350554324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37563091344 + 4782414025 = 193812^2 + 69155^2 .

It is a cyclic number.

It is not a de Polignac number, because 42345505369 - 2³⁵ = 7985767001 is a prime.

It is a super-2 number, since 2×42345505369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42345505669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21172752684 + 21172752685.

It is an arithmetic number, because the mean of its divisors is an integer number (21172752685).

Almost surely, 2^42345505369 is an apocalyptic number.

It is an amenable number.

42345505369 is a deficient number, since it is larger than the sum of its proper divisors (1).

42345505369 is an equidigital number, since it uses as much as digits as its factorization.

42345505369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 42345505369 in words is "forty-two billion, three hundred forty-five million, five hundred five thousand, three hundred sixty-nine".