421034425 has 24 divisors (see below), whose sum is σ = 600158016. Its totient is φ = 287019840.

The previous prime is 421034423. The next prime is 421034429. The reversal of 421034425 is 524430124.

It is a happy number.

It is not a de Polignac number, because 421034425 - 2¹ = 421034423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421034425.

It is not an unprimeable number, because it can be changed into a prime (421034423) 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, 23322 + ... + 37228.

It is an arithmetic number, because the mean of its divisors is an integer number (25006584).

Almost surely, 2^421034425 is an apocalyptic number.

It is an amenable number.

421034425 is a deficient number, since it is larger than the sum of its proper divisors (179123591).

421034425 is a wasteful number, since it uses less digits than its factorization.

421034425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14097 (or 14092 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 421034425 is about 20519.1233974554. The cubic root of 421034425 is about 749.5015502854.

Adding to 421034425 its reverse (524430124), we get a palindrome (945464549).

The spelling of 421034425 in words is "four hundred twenty-one million, thirty-four thousand, four hundred twenty-five".