123000003120 has 40 divisors (see below), whose sum is σ = 381300010416. Its totient is φ = 32800000768.

The previous prime is 123000003101. The next prime is 123000003179. The reversal of 123000003120 is 21300000321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 123000003096 and 123000003105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256249767 + ... + 256250246.

Almost surely, 2^123000003120 is an apocalyptic number.

123000003120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123000003120 is an abundant number, since it is smaller than the sum of its proper divisors (258300007296).

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

123000003120 is a wasteful number, since it uses less digits than its factorization.

123000003120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512500029 (or 512500023 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 123000003120 its reverse (21300000321), we get a palindrome (144300003441).

The spelling of 123000003120 in words is "one hundred twenty-three billion, three thousand, one hundred twenty".