242403203453 has 2 divisors, whose sum is σ = 242403203454. Its totient is φ = 242403203452.

The previous prime is 242403203381. The next prime is 242403203459. The reversal of 242403203453 is 354302304242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203317122649 + 39086080804 = 450907^2 + 197702^2 .

It is a cyclic number.

It is not a de Polignac number, because 242403203453 - 2²⁰ = 242402154877 is a prime.

It is a super-2 number, since 2×242403203453² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242403203459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121201601726 + 121201601727.

It is an arithmetic number, because the mean of its divisors is an integer number (121201601727).

Almost surely, 2^242403203453 is an apocalyptic number.

It is an amenable number.

242403203453 is a deficient number, since it is larger than the sum of its proper divisors (1).

242403203453 is an equidigital number, since it uses as much as digits as its factorization.

242403203453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 242403203453 its reverse (354302304242), we get a palindrome (596705507695).

The spelling of 242403203453 in words is "two hundred forty-two billion, four hundred three million, two hundred three thousand, four hundred fifty-three".