1212340453 has 2 divisors, whose sum is σ = 1212340454. Its totient is φ = 1212340452.

The previous prime is 1212340433. The next prime is 1212340463. The reversal of 1212340453 is 3540432121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1212223489 + 116964 = 34817^2 + 342^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212340453 - 2⁵ = 1212340421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212340433) 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, 606170226 + 606170227.

It is an arithmetic number, because the mean of its divisors is an integer number (606170227).

Almost surely, 2^1212340453 is an apocalyptic number.

It is an amenable number.

1212340453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212340453 is an equidigital number, since it uses as much as digits as its factorization.

1212340453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1212340453 is about 34818.6796561846. The cubic root of 1212340453 is about 1066.2888443889.

Adding to 1212340453 its reverse (3540432121), we get a palindrome (4752772574).

The spelling of 1212340453 in words is "one billion, two hundred twelve million, three hundred forty thousand, four hundred fifty-three".