1261176103 has 12 divisors (see below), whose sum is σ = 1391440680. Its totient is φ = 1142232080.

The previous prime is 1261176101. The next prime is 1261176143. The reversal of 1261176103 is 3016711621.

It is not a de Polignac number, because 1261176103 - 2¹ = 1261176101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261176101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13176 + ... + 51922.

It is an arithmetic number, because the mean of its divisors is an integer number (115953390).

Almost surely, 2^1261176103 is an apocalyptic number.

1261176103 is a deficient number, since it is larger than the sum of its proper divisors (130264577).

1261176103 is a wasteful number, since it uses less digits than its factorization.

1261176103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39038 (or 39027 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1261176103 is about 35513.0413087925. The cubic root of 1261176103 is about 1080.4182487846.

Adding to 1261176103 its reverse (3016711621), we get a palindrome (4277887724).

The spelling of 1261176103 in words is "one billion, two hundred sixty-one million, one hundred seventy-six thousand, one hundred three".