123434250545 has 4 divisors (see below), whose sum is σ = 148121100660. Its totient is φ = 98747400432.

The previous prime is 123434250523. The next prime is 123434250551. The reversal of 123434250545 is 545052434321.

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 70824112384 + 52610138161 = 266128^2 + 229369^2 .

It is a cyclic number.

It is not a de Polignac number, because 123434250545 - 2¹² = 123434246449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123434250499 and 123434250508.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12343425050 + ... + 12343425059.

It is an arithmetic number, because the mean of its divisors is an integer number (37030275165).

Almost surely, 2^123434250545 is an apocalyptic number.

It is an amenable number.

123434250545 is a deficient number, since it is larger than the sum of its proper divisors (24686850115).

123434250545 is an equidigital number, since it uses as much as digits as its factorization.

123434250545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24686850114.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 123434250545 its reverse (545052434321), we get a palindrome (668486684866).

The spelling of 123434250545 in words is "one hundred twenty-three billion, four hundred thirty-four million, two hundred fifty thousand, five hundred forty-five".