1253102103 has 32 divisors (see below), whose sum is σ = 2032819200. Its totient is φ = 756604800.

The previous prime is 1253102099. The next prime is 1253102129. The reversal of 1253102103 is 3012013521.

It is not a de Polignac number, because 1253102103 - 2² = 1253102099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253102153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72703 + ... + 88271.

It is an arithmetic number, because the mean of its divisors is an integer number (63525600).

Almost surely, 2^1253102103 is an apocalyptic number.

1253102103 is a deficient number, since it is larger than the sum of its proper divisors (779717097).

1253102103 is a wasteful number, since it uses less digits than its factorization.

1253102103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15860 (or 15854 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1253102103 is about 35399.1822363173. The cubic root of 1253102103 is about 1078.1077126604.

Adding to 1253102103 its reverse (3012013521), we get a palindrome (4265115624).

The spelling of 1253102103 in words is "one billion, two hundred fifty-three million, one hundred two thousand, one hundred three".