421252125 has 64 divisors (see below), whose sum is σ = 805109760. Its totient is φ = 191611200.

The previous prime is 421252103. The next prime is 421252127. The reversal of 421252125 is 521252124.

It is not a de Polignac number, because 421252125 - 2⁵ = 421252093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421252095 and 421252104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421252127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1005166 + ... + 1005584.

It is an arithmetic number, because the mean of its divisors is an integer number (12579840).

Almost surely, 2^421252125 is an apocalyptic number.

It is an amenable number.

421252125 is a deficient number, since it is larger than the sum of its proper divisors (383857635).

421252125 is a wasteful number, since it uses less digits than its factorization.

421252125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827 (or 817 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 421252125 is about 20524.4275194218. The cubic root of 421252125 is about 749.6307070824.

Subtracting 421252125 from its reverse (521252124), we obtain a palindrome (99999999).

The spelling of 421252125 in words is "four hundred twenty-one million, two hundred fifty-two thousand, one hundred twenty-five".