123420512 has 12 divisors (see below), whose sum is σ = 242984196. Its totient is φ = 61710240.

The previous prime is 123420509. The next prime is 123420529. The reversal of 123420512 is 215024321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1928414 + ... + 1928477.

It is an arithmetic number, because the mean of its divisors is an integer number (20248683).

Almost surely, 2^123420512 is an apocalyptic number.

It is an amenable number.

123420512 is a deficient number, since it is larger than the sum of its proper divisors (119563684).

123420512 is an equidigital number, since it uses as much as digits as its factorization.

123420512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856901 (or 3856893 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 123420512 is about 11109.4784756081. The cubic root of 123420512 is about 497.8850828640.

Adding to 123420512 its reverse (215024321), we get a palindrome (338444833).

The spelling of 123420512 in words is "one hundred twenty-three million, four hundred twenty thousand, five hundred twelve".