42910069 has 2 divisors, whose sum is σ = 42910070. Its totient is φ = 42910068.

The previous prime is 42910061. The next prime is 42910099. The reversal of 42910069 is 96001924.

It is a happy number.

42910069 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., 42902500 + 7569 = 6550^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 42910069 - 2³ = 42910061 is a prime.

It is a super-2 number, since 2×42910069² = 3682548043169522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42910069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42910061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21455034 + 21455035.

It is an arithmetic number, because the mean of its divisors is an integer number (21455035).

Almost surely, 2^42910069 is an apocalyptic number.

It is an amenable number.

42910069 is a deficient number, since it is larger than the sum of its proper divisors (1).

42910069 is an equidigital number, since it uses as much as digits as its factorization.

42910069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 42910069 is about 6550.5777607781. The cubic root of 42910069 is about 350.0953998447.

The spelling of 42910069 in words is "forty-two million, nine hundred ten thousand, sixty-nine".