123247272 has 32 divisors (see below), whose sum is σ = 309247200. Its totient is φ = 40931904.

The previous prime is 123247261. The next prime is 123247279. The reversal of 123247272 is 272742321.

It is not an unprimeable number, because it can be changed into a prime (123247279) 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 7 ways as a sum of consecutive naturals, for example, 2622 + ... + 15917.

It is an arithmetic number, because the mean of its divisors is an integer number (9663975).

Almost surely, 2^123247272 is an apocalyptic number.

123247272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123247272 is an abundant number, since it is smaller than the sum of its proper divisors (185999928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123247272 is a wasteful number, since it uses less digits than its factorization.

123247272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18825 (or 18821 counting only the distinct ones).

The product of its digits is 9408, while the sum is 30.

The square root of 123247272 is about 11101.6787919666. The cubic root of 123247272 is about 497.6520205778.

Adding to 123247272 its reverse (272742321), we get a palindrome (395989593).

The spelling of 123247272 in words is "one hundred twenty-three million, two hundred forty-seven thousand, two hundred seventy-two".