20242603 has 2 divisors, whose sum is σ = 20242604. Its totient is φ = 20242602.

The previous prime is 20242591. The next prime is 20242687. The reversal of 20242603 is 30624202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20242603 is a prime.

It is equal to p_1285021 and since 20242603 and 1285021 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20242303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121301 + 10121302.

It is an arithmetic number, because the mean of its divisors is an integer number (10121302).

Almost surely, 2^20242603 is an apocalyptic number.

20242603 is a deficient number, since it is larger than the sum of its proper divisors (1).

20242603 is an equidigital number, since it uses as much as digits as its factorization.

20242603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20242603 is about 4499.1780360417. The cubic root of 20242603 is about 272.5348966335.

Adding to 20242603 its reverse (30624202), we get a palindrome (50866805).

The spelling of 20242603 in words is "twenty million, two hundred forty-two thousand, six hundred three".