423411021 has 12 divisors (see below), whose sum is σ = 667193280. Its totient is φ = 256612680.

The previous prime is 423410987. The next prime is 423411031. The reversal of 423411021 is 120114324.

It is not a de Polignac number, because 423411021 - 2⁷ = 423410893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423410985 and 423411003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423411031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2138341 + ... + 2138538.

It is an arithmetic number, because the mean of its divisors is an integer number (55599440).

Almost surely, 2^423411021 is an apocalyptic number.

It is an amenable number.

423411021 is a deficient number, since it is larger than the sum of its proper divisors (243782259).

423411021 is a wasteful number, since it uses less digits than its factorization.

423411021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276896 (or 4276893 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 423411021 is about 20576.9536375043. The cubic root of 423411021 is about 750.9091321929.

Adding to 423411021 its reverse (120114324), we get a palindrome (543525345).

The spelling of 423411021 in words is "four hundred twenty-three million, four hundred eleven thousand, twenty-one".