123302530 has 32 divisors (see below), whose sum is σ = 253081584. Its totient is φ = 42848256.

The previous prime is 123302527. The next prime is 123302551. The reversal of 123302530 is 35203321.

It can be written as a sum of positive squares in 8 ways, for example, as 19527561 + 103774969 = 4419^2 + 10187^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123302498 and 123302507.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25687 + ... + 30106.

Almost surely, 2^123302530 is an apocalyptic number.

123302530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123302530 is an abundant number, since it is smaller than the sum of its proper divisors (129779054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123302530 is a wasteful number, since it uses less digits than its factorization.

123302530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55830.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 123302530 is about 11104.1672357723. The cubic root of 123302530 is about 497.7263836750.

Adding to 123302530 its reverse (35203321), we get a palindrome (158505851).

The spelling of 123302530 in words is "one hundred twenty-three million, three hundred two thousand, five hundred thirty".