423400120 has 64 divisors (see below), whose sum is σ = 1119212640. Its totient is φ = 142118400.

The previous prime is 423400097. The next prime is 423400129. The reversal of 423400120 is 21004324.

It is a junction number, because it is equal to n+sod(n) for n = 423400094 and 423400103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423400129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31291 + ... + 42730.

Almost surely, 2^423400120 is an apocalyptic number.

423400120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423400120 is an abundant number, since it is smaller than the sum of its proper divisors (695812520).

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

423400120 is a wasteful number, since it uses less digits than its factorization.

423400120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74056 (or 74052 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 423400120 is about 20576.6887520806. The cubic root of 423400120 is about 750.9026879183.

Adding to 423400120 its reverse (21004324), we get a palindrome (444404444).

The spelling of 423400120 in words is "four hundred twenty-three million, four hundred thousand, one hundred twenty".