123393420 has 36 divisors (see below), whose sum is σ = 374293920. Its totient is φ = 32904864.

The previous prime is 123393419. The next prime is 123393421. The reversal of 123393420 is 24393321.

It is a happy number.

123393420 is a `hidden beast` number, since 1 + 233 + 9 + 3 + 420 = 666.

It is an interprime number because it is at equal distance from previous prime (123393419) and next prime (123393421).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (123393421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342580 + ... + 342939.

Almost surely, 2^123393420 is an apocalyptic number.

123393420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123393420 is an abundant number, since it is smaller than the sum of its proper divisors (250900500).

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

123393420 is a wasteful number, since it uses less digits than its factorization.

123393420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685534 (or 685529 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 123393420 is about 11108.2590895243. The cubic root of 123393420 is about 497.8486499958.

Subtracting from 123393420 its reverse (24393321), we obtain a palindrome (99000099).

The spelling of 123393420 in words is "one hundred twenty-three million, three hundred ninety-three thousand, four hundred twenty".