42690353 has 2 divisors, whose sum is σ = 42690354. Its totient is φ = 42690352.

The previous prime is 42690343. The next prime is 42690367. The reversal of 42690353 is 35309624.

42690353 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., 22771984 + 19918369 = 4772^2 + 4463^2 .

It is a cyclic number.

It is not a de Polignac number, because 42690353 - 2⁶ = 42690289 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42690343) 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, 21345176 + 21345177.

It is an arithmetic number, because the mean of its divisors is an integer number (21345177).

Almost surely, 2^42690353 is an apocalyptic number.

It is an amenable number.

42690353 is a deficient number, since it is larger than the sum of its proper divisors (1).

42690353 is an equidigital number, since it uses as much as digits as its factorization.

42690353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 42690353 is about 6533.7855030602. The cubic root of 42690353 is about 349.4968361765.

Adding to 42690353 its reverse (35309624), we get a palindrome (77999977).

The spelling of 42690353 in words is "forty-two million, six hundred ninety thousand, three hundred fifty-three".