123530000453 has 4 divisors (see below), whose sum is σ = 123679012140. Its totient is φ = 123380988768.

The previous prime is 123530000417. The next prime is 123530000459. The reversal of 123530000453 is 354000035321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354000035321 = 3359 ⋅105388519.

It can be written as a sum of positive squares in 2 ways, for example, as 103348104484 + 20181895969 = 321478^2 + 142063^2 .

It is a cyclic number.

It is not a de Polignac number, because 123530000453 - 2²² = 123525806149 is a prime.

It is a super-2 number, since 2×123530000453² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123530000459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74504600 + ... + 74506257.

It is an arithmetic number, because the mean of its divisors is an integer number (30919753035).

Almost surely, 2^123530000453 is an apocalyptic number.

It is an amenable number.

123530000453 is a deficient number, since it is larger than the sum of its proper divisors (149011687).

123530000453 is an equidigital number, since it uses as much as digits as its factorization.

123530000453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149011686.

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 123530000453 its reverse (354000035321), we get a palindrome (477530035774).

The spelling of 123530000453 in words is "one hundred twenty-three billion, five hundred thirty million, four hundred fifty-three", and thus it is an aban number.