20042413 has 2 divisors, whose sum is σ = 20042414. Its totient is φ = 20042412.

The previous prime is 20042389. The next prime is 20042417. The reversal of 20042413 is 31424002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18088009 + 1954404 = 4253^2 + 1398^2 .

It is a cyclic number.

It is not a de Polignac number, because 20042413 - 2²¹ = 17945261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20042417) 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, 10021206 + 10021207.

It is an arithmetic number, because the mean of its divisors is an integer number (10021207).

Almost surely, 2^20042413 is an apocalyptic number.

It is an amenable number.

20042413 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042413 is an equidigital number, since it uses as much as digits as its factorization.

20042413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20042413 is about 4476.8753612313. The cubic root of 20042413 is about 271.6335038412.

Adding to 20042413 its reverse (31424002), we get a palindrome (51466415).

The spelling of 20042413 in words is "twenty million, forty-two thousand, four hundred thirteen".