123212447 has 8 divisors (see below), whose sum is σ = 130572000. Its totient is φ = 115865344.

The previous prime is 123212437. The next prime is 123212459. The reversal of 123212447 is 744212321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123212447 - 2¹⁰ = 123211423 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 (123212437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24179 + ... + 28827.

It is an arithmetic number, because the mean of its divisors is an integer number (16321500).

Almost surely, 2^123212447 is an apocalyptic number.

123212447 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

123212447 is a deficient number, since it is larger than the sum of its proper divisors (7359553).

123212447 is a wasteful number, since it uses less digits than its factorization.

123212447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6225.

The product of its digits is 2688, while the sum is 26.

The square root of 123212447 is about 11100.1102246780. The cubic root of 123212447 is about 497.6051436398.

Adding to 123212447 its reverse (744212321), we get a palindrome (867424768).

The spelling of 123212447 in words is "one hundred twenty-three million, two hundred twelve thousand, four hundred forty-seven".