420224125 has 8 divisors (see below), whose sum is σ = 524439864. Its totient is φ = 336179200.

The previous prime is 420224117. The next prime is 420224131. The reversal of 420224125 is 521422024.

It can be written as a sum of positive squares in 4 ways, for example, as 53846244 + 366377881 = 7338^2 + 19141^2 .

It is not a de Polignac number, because 420224125 - 2³ = 420224117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420224096 and 420224105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1680772 + ... + 1681021.

It is an arithmetic number, because the mean of its divisors is an integer number (65554983).

Almost surely, 2^420224125 is an apocalyptic number.

It is an amenable number.

420224125 is a deficient number, since it is larger than the sum of its proper divisors (104215739).

420224125 is an equidigital number, since it uses as much as digits as its factorization.

420224125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361808 (or 3361798 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 420224125 is about 20499.3688927245. The cubic root of 420224125 is about 749.0204248374.

Adding to 420224125 its reverse (521422024), we get a palindrome (941646149).

The spelling of 420224125 in words is "four hundred twenty million, two hundred twenty-four thousand, one hundred twenty-five".