123417220 has 12 divisors (see below), whose sum is σ = 259176204. Its totient is φ = 49366880.

The previous prime is 123417211. The next prime is 123417223. The reversal of 123417220 is 22714321.

It can be written as a sum of positive squares in 2 ways, for example, as 41550916 + 81866304 = 6446^2 + 9048^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123417191 and 123417200.

It is not an unprimeable number, because it can be changed into a prime (123417223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3085411 + ... + 3085450.

It is an arithmetic number, because the mean of its divisors is an integer number (21598017).

Almost surely, 2^123417220 is an apocalyptic number.

123417220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123417220 is an abundant number, since it is smaller than the sum of its proper divisors (135758984).

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

123417220 is a wasteful number, since it uses less digits than its factorization.

123417220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6170870 (or 6170868 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 123417220 is about 11109.3303128496. The cubic root of 123417220 is about 497.8806561221.

The spelling of 123417220 in words is "one hundred twenty-three million, four hundred seventeen thousand, two hundred twenty".