123444906 has 32 divisors (see below), whose sum is σ = 266316288. Its totient is φ = 37920960.

The previous prime is 123444901. The next prime is 123444911. The reversal of 123444906 is 609444321.

It is an interprime number because it is at equal distance from previous prime (123444901) and next prime (123444911).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123444901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76500 + ... + 78096.

It is an arithmetic number, because the mean of its divisors is an integer number (8322384).

Almost surely, 2^123444906 is an apocalyptic number.

123444906 is an abundant number, since it is smaller than the sum of its proper divisors (142871382).

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

123444906 is a wasteful number, since it uses less digits than its factorization.

123444906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 123444906 is about 11110.5763126851. The cubic root of 123444906 is about 497.9178829457.

The spelling of 123444906 in words is "one hundred twenty-three million, four hundred forty-four thousand, nine hundred six".