20042353 has 2 divisors, whose sum is σ = 20042354. Its totient is φ = 20042352.

The previous prime is 20042327. The next prime is 20042357. The reversal of 20042353 is 35324002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15745024 + 4297329 = 3968^2 + 2073^2 .

It is a cyclic number.

It is not a de Polignac number, because 20042353 - 2²¹ = 17945201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20042353.

It is not a weakly prime, because it can be changed into another prime (20042357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021176 + 10021177.

It is an arithmetic number, because the mean of its divisors is an integer number (10021177).

Almost surely, 2^20042353 is an apocalyptic number.

It is an amenable number.

20042353 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042353 is an equidigital number, since it uses as much as digits as its factorization.

20042353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20042353 is about 4476.8686601239. The cubic root of 20042353 is about 271.6332327823.

Adding to 20042353 its reverse (35324002), we get a palindrome (55366355).

The spelling of 20042353 in words is "twenty million, forty-two thousand, three hundred fifty-three".