1267123113 has 12 divisors (see below), whose sum is σ = 1830599940. Its totient is φ = 844605216.

The previous prime is 1267123111. The next prime is 1267123133. The reversal of 1267123113 is 3113217621.

It can be written as a sum of positive squares in 2 ways, for example, as 1081291689 + 185831424 = 32883^2 + 13632^2 .

It is not a de Polignac number, because 1267123113 - 2¹ = 1267123111 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1267123111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87343 + ... + 100811.

It is an arithmetic number, because the mean of its divisors is an integer number (152549995).

Almost surely, 2^1267123113 is an apocalyptic number.

It is an amenable number.

1267123113 is a deficient number, since it is larger than the sum of its proper divisors (563476827).

1267123113 is a wasteful number, since it uses less digits than its factorization.

1267123113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23928 (or 23925 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1267123113 is about 35596.6727799102. The cubic root of 1267123113 is about 1082.1138050635.

The spelling of 1267123113 in words is "one billion, two hundred sixty-seven million, one hundred twenty-three thousand, one hundred thirteen".