1245423211 has 2 divisors, whose sum is σ = 1245423212. Its totient is φ = 1245423210.

The previous prime is 1245423199. The next prime is 1245423227. The reversal of 1245423211 is 1123245421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1245423211 - 2⁷ = 1245423083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242423211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622711605 + 622711606.

It is an arithmetic number, because the mean of its divisors is an integer number (622711606).

Almost surely, 2^1245423211 is an apocalyptic number.

1245423211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245423211 is an equidigital number, since it uses as much as digits as its factorization.

1245423211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 25.

The square root of 1245423211 is about 35290.5541327988. The cubic root of 1245423211 is about 1075.9010180941.

Adding to 1245423211 its reverse (1123245421), we get a palindrome (2368668632).

The spelling of 1245423211 in words is "one billion, two hundred forty-five million, four hundred twenty-three thousand, two hundred eleven".