423121000 has 32 divisors (see below), whose sum is σ = 990105480. Its totient is φ = 169248000.

The previous prime is 423120977. The next prime is 423121001. The reversal of 423121000 is 121324.

It can be written as a sum of positive squares in 4 ways, for example, as 20958084 + 402162916 = 4578^2 + 20054^2 .

It is not an unprimeable number, because it can be changed into a prime (423121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210561 + ... + 212560.

Almost surely, 2^423121000 is an apocalyptic number.

423121000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423121000 is an abundant number, since it is smaller than the sum of its proper divisors (566984480).

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

423121000 is a wasteful number, since it uses less digits than its factorization.

423121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423142 (or 423128 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 423121000 is about 20569.9052015317. The cubic root of 423121000 is about 750.7376446397.

Adding to 423121000 its reverse (121324), we get a palindrome (423242324).

The spelling of 423121000 in words is "four hundred twenty-three million, one hundred twenty-one thousand".