123220030 has 16 divisors (see below), whose sum is σ = 222133104. Its totient is φ = 49213120.

The previous prime is 123219977. The next prime is 123220051. The reversal of 123220030 is 30022321.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2191 + ... + 15850.

It is an arithmetic number, because the mean of its divisors is an integer number (13883319).

Almost surely, 2^123220030 is an apocalyptic number.

123220030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123220030 is a deficient number, since it is larger than the sum of its proper divisors (98913074).

123220030 is a wasteful number, since it uses less digits than its factorization.

123220030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18731.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 123220030 is about 11100.4517926074. The cubic root of 123220030 is about 497.6153516517.

Adding to 123220030 its reverse (30022321), we get a palindrome (153242351).

The spelling of 123220030 in words is "one hundred twenty-three million, two hundred twenty thousand, thirty".