123444901 has 2 divisors, whose sum is σ = 123444902. Its totient is φ = 123444900.

The previous prime is 123444899. The next prime is 123444911. The reversal of 123444901 is 109444321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98704225 + 24740676 = 9935^2 + 4974^2 .

It is a cyclic number.

It is not a de Polignac number, because 123444901 - 2¹ = 123444899 is a prime.

Together with 123444899, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 123444901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123444911) 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 as a sum of consecutive naturals, namely, 61722450 + 61722451.

It is an arithmetic number, because the mean of its divisors is an integer number (61722451).

Almost surely, 2^123444901 is an apocalyptic number.

It is an amenable number.

123444901 is a deficient number, since it is larger than the sum of its proper divisors (1).

123444901 is an equidigital number, since it uses as much as digits as its factorization.

123444901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 123444901 is about 11110.5760876743. The cubic root of 123444901 is about 497.9178762232.

The spelling of 123444901 in words is "one hundred twenty-three million, four hundred forty-four thousand, nine hundred one".