123749272 has 16 divisors (see below), whose sum is σ = 239515200. Its totient is φ = 59878560.

The previous prime is 123749257. The next prime is 123749287. The reversal of 123749272 is 272947321.

It is an interprime number because it is at equal distance from previous prime (123749257) and next prime (123749287).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249247 + ... + 249742.

It is an arithmetic number, because the mean of its divisors is an integer number (14969700).

Almost surely, 2^123749272 is an apocalyptic number.

It is an amenable number.

123749272 is a deficient number, since it is larger than the sum of its proper divisors (115765928).

123749272 is a wasteful number, since it uses less digits than its factorization.

123749272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499026 (or 499022 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 123749272 is about 11124.2650094287. The cubic root of 123749272 is about 498.3267695122.

The spelling of 123749272 in words is "one hundred twenty-three million, seven hundred forty-nine thousand, two hundred seventy-two".