1203440453 has 2 divisors, whose sum is σ = 1203440454. Its totient is φ = 1203440452.

The previous prime is 1203440423. The next prime is 1203440461. The reversal of 1203440453 is 3540443021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 745180804 + 458259649 = 27298^2 + 21407^2 .

It is an emirp because it is prime and its reverse (3540443021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1203440453 - 2⁶ = 1203440389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203440423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601720226 + 601720227.

It is an arithmetic number, because the mean of its divisors is an integer number (601720227).

Almost surely, 2^1203440453 is an apocalyptic number.

It is an amenable number.

1203440453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203440453 is an equidigital number, since it uses as much as digits as its factorization.

1203440453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 1203440453 is about 34690.6392705583. The cubic root of 1203440453 is about 1063.6731631882.

Adding to 1203440453 its reverse (3540443021), we get a palindrome (4743883474).

The spelling of 1203440453 in words is "one billion, two hundred three million, four hundred forty thousand, four hundred fifty-three".