1245502241 has 2 divisors, whose sum is σ = 1245502242. Its totient is φ = 1245502240.

The previous prime is 1245502217. The next prime is 1245502243. The reversal of 1245502241 is 1422055421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 992565025 + 252937216 = 31505^2 + 15904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1245502241 is a prime.

Together with 1245502243, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1245502241.

It is not a weakly prime, because it can be changed into another prime (1245502243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622751120 + 622751121.

It is an arithmetic number, because the mean of its divisors is an integer number (622751121).

Almost surely, 2^1245502241 is an apocalyptic number.

It is an amenable number.

1245502241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245502241 is an equidigital number, since it uses as much as digits as its factorization.

1245502241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1245502241 is about 35291.6738197553. The cubic root of 1245502241 is about 1075.9237751934.

Adding to 1245502241 its reverse (1422055421), we get a palindrome (2667557662).

The spelling of 1245502241 in words is "one billion, two hundred forty-five million, five hundred two thousand, two hundred forty-one".