123523420 has 24 divisors (see below), whose sum is σ = 259616448. Its totient is φ = 49368000.

The previous prime is 123523417. The next prime is 123523451. The reversal of 123523420 is 24325321.

It is a junction number, because it is equal to n+sod(n) for n = 123523391 and 123523400.

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, 35770 + ... + 39070.

It is an arithmetic number, because the mean of its divisors is an integer number (10817352).

Almost surely, 2^123523420 is an apocalyptic number.

123523420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123523420 is an abundant number, since it is smaller than the sum of its proper divisors (136093028).

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

123523420 is a wasteful number, since it uses less digits than its factorization.

123523420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181 (or 5179 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 123523420 is about 11114.1090511116. The cubic root of 123523420 is about 498.0234232516.

Adding to 123523420 its reverse (24325321), we get a palindrome (147848741).

The spelling of 123523420 in words is "one hundred twenty-three million, five hundred twenty-three thousand, four hundred twenty".