1245242413 has 2 divisors, whose sum is σ = 1245242414. Its totient is φ = 1245242412.

The previous prime is 1245242407. The next prime is 1245242417. The reversal of 1245242413 is 3142425421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1237773124 + 7469289 = 35182^2 + 2733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245242413 - 2⁵ = 1245242381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245242417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622621206 + 622621207.

It is an arithmetic number, because the mean of its divisors is an integer number (622621207).

Almost surely, 2^1245242413 is an apocalyptic number.

It is an amenable number.

1245242413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245242413 is an equidigital number, since it uses as much as digits as its factorization.

1245242413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 28.

The square root of 1245242413 is about 35287.9924761951. The cubic root of 1245242413 is about 1075.8489527496.

Adding to 1245242413 its reverse (3142425421), we get a palindrome (4387667834).

The spelling of 1245242413 in words is "one billion, two hundred forty-five million, two hundred forty-two thousand, four hundred thirteen".