123350423557 has 4 divisors (see below), whose sum is σ = 123354923436. Its totient is φ = 123345923680.

The previous prime is 123350423533. The next prime is 123350423591. The reversal of 123350423557 is 755324053321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 755324053321 = 269 ⋅2807896109.

It can be written as a sum of positive squares in 2 ways, for example, as 100565728641 + 22784694916 = 317121^2 + 150946^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123350423557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123350423857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2208568 + ... + 2263729.

It is an arithmetic number, because the mean of its divisors is an integer number (30838730859).

Almost surely, 2^123350423557 is an apocalyptic number.

It is an amenable number.

123350423557 is a deficient number, since it is larger than the sum of its proper divisors (4499879).

123350423557 is an equidigital number, since it uses as much as digits as its factorization.

123350423557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499878.

The product of its (nonzero) digits is 378000, while the sum is 40.

Adding to 123350423557 its reverse (755324053321), we get a palindrome (878674476878).

The spelling of 123350423557 in words is "one hundred twenty-three billion, three hundred fifty million, four hundred twenty-three thousand, five hundred fifty-seven".