421025 has 12 divisors (see below), whose sum is σ = 569904. Its totient is φ = 306000.

The previous prime is 421019. The next prime is 421033. The reversal of 421025 is 520124.

It is not a de Polignac number, because 421025 - 2⁴ = 421009 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 421025.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 491 + ... + 1040.

It is an arithmetic number, because the mean of its divisors is an integer number (47492).

2⁴²¹⁰²⁵ is an apocalyptic number.

It is an amenable number.

421025 is a deficient number, since it is larger than the sum of its proper divisors (148879).

421025 is a wasteful number, since it uses less digits than its factorization.

421025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 421025 is about 648.8643926122. The cubic root of 421025 is about 74.9495957627.

Adding to 421025 its reverse (520124), we get a palindrome (941149).

Subtracting 421025 from its reverse (520124), we obtain a palindrome (99099).

It can be divided in two parts, 4 and 21025, that multiplied together give a square (84100 = 290²).

The spelling of 421025 in words is "four hundred twenty-one thousand, twenty-five".