123450230105 has 4 divisors (see below), whose sum is σ = 148140276132. Its totient is φ = 98760184080.

The previous prime is 123450230087. The next prime is 123450230117. The reversal of 123450230105 is 501032054321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17104454656 + 106345775449 = 130784^2 + 326107^2 .

It is not a de Polignac number, because 123450230105 - 2⁶ = 123450230041 is a prime.

It is a super-2 number, since 2×123450230105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12345023006 + ... + 12345023015.

It is an arithmetic number, because the mean of its divisors is an integer number (37035069033).

Almost surely, 2^123450230105 is an apocalyptic number.

It is an amenable number.

123450230105 is a deficient number, since it is larger than the sum of its proper divisors (24690046027).

123450230105 is an equidigital number, since it uses as much as digits as its factorization.

123450230105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24690046026.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 123450230105 its reverse (501032054321), we get a palindrome (624482284426).

The spelling of 123450230105 in words is "one hundred twenty-three billion, four hundred fifty million, two hundred thirty thousand, one hundred five".