20242997 has 2 divisors, whose sum is σ = 20242998. Its totient is φ = 20242996.

The previous prime is 20242993. The next prime is 20243011. The reversal of 20242997 is 79924202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12630916 + 7612081 = 3554^2 + 2759^2 .

It is a cyclic number.

It is not a de Polignac number, because 20242997 - 2² = 20242993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20242993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121498 + 10121499.

It is an arithmetic number, because the mean of its divisors is an integer number (10121499).

Almost surely, 2^20242997 is an apocalyptic number.

It is an amenable number.

20242997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20242997 is an equidigital number, since it uses as much as digits as its factorization.

20242997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20242997 is about 4499.2218216043. The cubic root of 20242997 is about 272.5366648194.

The spelling of 20242997 in words is "twenty million, two hundred forty-two thousand, nine hundred ninety-seven".