1245215441 has 2 divisors, whose sum is σ = 1245215442. Its totient is φ = 1245215440.

The previous prime is 1245215437. The next prime is 1245215467. The reversal of 1245215441 is 1445125421.

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., 1030153216 + 215062225 = 32096^2 + 14665^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245215441 - 2² = 1245215437 is a prime.

It is a super-3 number, since 3×1245215441³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1245215401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622607720 + 622607721.

It is an arithmetic number, because the mean of its divisors is an integer number (622607721).

Almost surely, 2^1245215441 is an apocalyptic number.

It is an amenable number.

1245215441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245215441 is an equidigital number, since it uses as much as digits as its factorization.

1245215441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6400, while the sum is 29.

The square root of 1245215441 is about 35287.6103044681. The cubic root of 1245215441 is about 1075.8411850498.

The spelling of 1245215441 in words is "one billion, two hundred forty-five million, two hundred fifteen thousand, four hundred forty-one".