421353125 has 24 divisors (see below), whose sum is σ = 531919080. Its totient is φ = 333720000.

The previous prime is 421353103. The next prime is 421353131. The reversal of 421353125 is 521353124.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 390694756 + 30658369 = 19766^2 + 5537^2 .

It is not a de Polignac number, because 421353125 - 2⁶ = 421353061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421353094 and 421353103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340007 + ... + 341243.

It is an arithmetic number, because the mean of its divisors is an integer number (22163295).

Almost surely, 2^421353125 is an apocalyptic number.

It is an amenable number.

421353125 is a deficient number, since it is larger than the sum of its proper divisors (110565955).

421353125 is an equidigital number, since it uses as much as digits as its factorization.

421353125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371 (or 1351 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 421353125 is about 20526.8878547139. The cubic root of 421353125 is about 749.6906131313.

Subtracting 421353125 from its reverse (521353124), we obtain a palindrome (99999999).

The spelling of 421353125 in words is "four hundred twenty-one million, three hundred fifty-three thousand, one hundred twenty-five".