123220412 has 24 divisors (see below), whose sum is σ = 254392320. Its totient is φ = 51104880.

The previous prime is 123220337. The next prime is 123220421. The reversal of 123220412 is 214022321.

It is a congruent number.

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, 70112 + ... + 71847.

It is an arithmetic number, because the mean of its divisors is an integer number (10599680).

Almost surely, 2^123220412 is an apocalyptic number.

It is an amenable number.

123220412 is an abundant number, since it is smaller than the sum of its proper divisors (131171908).

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

123220412 is a wasteful number, since it uses less digits than its factorization.

123220412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142001 (or 141999 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 123220412 is about 11100.4689991009. The cubic root of 123220412 is about 497.6158658778.

Adding to 123220412 its reverse (214022321), we get a palindrome (337242733).

The spelling of 123220412 in words is "one hundred twenty-three million, two hundred twenty thousand, four hundred twelve".