123030536 has 8 divisors (see below), whose sum is σ = 230682270. Its totient is φ = 61515264.

The previous prime is 123030497. The next prime is 123030539. The reversal of 123030536 is 635030321.

It can be written as a sum of positive squares in only one way, i.e., 122988100 + 42436 = 11090^2 + 206^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (123030539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7689401 + ... + 7689416.

Almost surely, 2^123030536 is an apocalyptic number.

It is an amenable number.

123030536 is a deficient number, since it is larger than the sum of its proper divisors (107651734).

123030536 is a wasteful number, since it uses less digits than its factorization.

123030536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15378823 (or 15378819 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 123030536 is about 11091.9130901752. The cubic root of 123030536 is about 497.3601347522.

Adding to 123030536 its reverse (635030321), we get a palindrome (758060857).

The spelling of 123030536 in words is "one hundred twenty-three million, thirty thousand, five hundred thirty-six".