123444121443 has 16 divisors (see below), whose sum is σ = 168289973760. Its totient is φ = 80451255456.

The previous prime is 123444121433. The next prime is 123444121477. The reversal of 123444121443 is 344121444321.

It is a happy number.

It is not a de Polignac number, because 123444121443 - 2⁶ = 123444121379 is a prime.

It is a super-2 number, since 2×123444121443² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123444121433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388480 + ... + 630717.

It is an arithmetic number, because the mean of its divisors is an integer number (10518123360).

Almost surely, 2^123444121443 is an apocalyptic number.

123444121443 is a deficient number, since it is larger than the sum of its proper divisors (44845852317).

123444121443 is a wasteful number, since it uses less digits than its factorization.

123444121443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020106.

The product of its digits is 36864, while the sum is 33.

Adding to 123444121443 its reverse (344121444321), we get a palindrome (467565565764).

The spelling of 123444121443 in words is "one hundred twenty-three billion, four hundred forty-four million, one hundred twenty-one thousand, four hundred forty-three".