423120015 has 24 divisors (see below), whose sum is σ = 740145120. Its totient is φ = 223591104.

The previous prime is 423119999. The next prime is 423120017. The reversal of 423120015 is 510021324.

It is not a de Polignac number, because 423120015 - 2⁴ = 423119999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423120015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423120017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38227 + ... + 48036.

It is an arithmetic number, because the mean of its divisors is an integer number (30839380).

Almost surely, 2^423120015 is an apocalyptic number.

423120015 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

423120015 is a deficient number, since it is larger than the sum of its proper divisors (317025105).

423120015 is a wasteful number, since it uses less digits than its factorization.

423120015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86383 (or 86380 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 423120015 is about 20569.8812587725. The cubic root of 423120015 is about 750.7370620820.

Adding to 423120015 its reverse (510021324), we get a palindrome (933141339).

The spelling of 423120015 in words is "four hundred twenty-three million, one hundred twenty thousand, fifteen".