421049825 has 24 divisors (see below), whose sum is σ = 612823872. Its totient is φ = 280912320.

The previous prime is 421049821. The next prime is 421049879. The reversal of 421049825 is 528940124.

It is not a de Polignac number, because 421049825 - 2² = 421049821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421049821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26039 + ... + 38988.

It is an arithmetic number, because the mean of its divisors is an integer number (25534328).

Almost surely, 2^421049825 is an apocalyptic number.

It is an amenable number.

421049825 is a deficient number, since it is larger than the sum of its proper divisors (191774047).

421049825 is a wasteful number, since it uses less digits than its factorization.

421049825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65081 (or 65076 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 421049825 is about 20519.4986537196. The cubic root of 421049825 is about 749.5106882422.

Adding to 421049825 its reverse (528940124), we get a palindrome (949989949).

The spelling of 421049825 in words is "four hundred twenty-one million, forty-nine thousand, eight hundred twenty-five".