123630020 has 24 divisors (see below), whose sum is σ = 259858368. Its totient is φ = 49407200.

The previous prime is 123630019. The next prime is 123630029. The reversal of 123630020 is 20036321.

It is not an unprimeable number, because it can be changed into a prime (123630029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28175 + ... + 32265.

It is an arithmetic number, because the mean of its divisors is an integer number (10827432).

Almost surely, 2^123630020 is an apocalyptic number.

123630020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123630020 is an abundant number, since it is smaller than the sum of its proper divisors (136228348).

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

123630020 is a wasteful number, since it uses less digits than its factorization.

123630020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611 (or 5609 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 123630020 is about 11118.9037229396. The cubic root of 123630020 is about 498.1666458414.

Adding to 123630020 its reverse (20036321), we get a palindrome (143666341).

The spelling of 123630020 in words is "one hundred twenty-three million, six hundred thirty thousand, twenty".