423520424 has 8 divisors (see below), whose sum is σ = 794100810. Its totient is φ = 211760208.

The previous prime is 423520411. The next prime is 423520451. The reversal of 423520424 is 424025324.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 377524900 + 45995524 = 19430^2 + 6782^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 423520393 and 423520402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26470019 + ... + 26470034.

Almost surely, 2^423520424 is an apocalyptic number.

It is an amenable number.

423520424 is a deficient number, since it is larger than the sum of its proper divisors (370580386).

423520424 is a wasteful number, since it uses less digits than its factorization.

423520424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52940059 (or 52940055 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 423520424 is about 20579.6118525107. The cubic root of 423520424 is about 750.9738011420.

Adding to 423520424 its reverse (424025324), we get a palindrome (847545748).

The spelling of 423520424 in words is "four hundred twenty-three million, five hundred twenty thousand, four hundred twenty-four".