1245103 has 2 divisors, whose sum is σ = 1245104. Its totient is φ = 1245102.

The previous prime is 1245091. The next prime is 1245113. The reversal of 1245103 is 3015421.

It is a strong prime.

It is an emirp because it is prime and its reverse (3015421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1245103 - 2⁹ = 1244591 is a prime.

1245103 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622551 + 622552.

It is an arithmetic number, because the mean of its divisors is an integer number (622552).

2^1245103 is an apocalyptic number.

1245103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245103 is an equidigital number, since it uses as much as digits as its factorization.

1245103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1245103 is about 1115.8418346701. The cubic root of 1245103 is about 107.5808801818.

The spelling of 1245103 in words is "one million, two hundred forty-five thousand, one hundred three".