1245641103 has 18 divisors (see below), whose sum is σ = 2093016744. Its totient is φ = 711794664.

The previous prime is 1245641093. The next prime is 1245641123. The reversal of 1245641103 is 3011465421.

It is a happy number.

1245641103 is a `hidden beast` number, since 1 + 2 + 4 + 5 + 641 + 10 + 3 = 666.

It is not a de Polignac number, because 1245641103 - 2⁴ = 1245641087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245641123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1411851 + ... + 1412732.

It is an arithmetic number, because the mean of its divisors is an integer number (116278708).

Almost surely, 2^1245641103 is an apocalyptic number.

1245641103 is a deficient number, since it is larger than the sum of its proper divisors (847375641).

1245641103 is a wasteful number, since it uses less digits than its factorization.

1245641103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824603 (or 2824593 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1245641103 is about 35293.6411128124. The cubic root of 1245641103 is about 1075.9637588965.

The spelling of 1245641103 in words is "one billion, two hundred forty-five million, six hundred forty-one thousand, one hundred three".