123676749 has 24 divisors (see below), whose sum is σ = 204693632. Its totient is φ = 70489440.

The previous prime is 123676747. The next prime is 123676753. The reversal of 123676749 is 947676321.

It is not a de Polignac number, because 123676749 - 2¹ = 123676747 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123676747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24192 + ... + 28854.

Almost surely, 2^123676749 is an apocalyptic number.

It is an amenable number.

123676749 is a deficient number, since it is larger than the sum of its proper divisors (81016883).

123676749 is a wasteful number, since it uses less digits than its factorization.

123676749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5097 (or 5094 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 123676749 is about 11121.0048556774. The cubic root of 123676749 is about 498.2294027049.

The spelling of 123676749 in words is "one hundred twenty-three million, six hundred seventy-six thousand, seven hundred forty-nine".