420341525 has 6 divisors (see below), whose sum is σ = 521223522. Its totient is φ = 336273200.

The previous prime is 420341521. The next prime is 420341557. The reversal of 420341525 is 525143024.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 72556324 + 347785201 = 8518^2 + 18649^2 .

It is not a de Polignac number, because 420341525 - 2² = 420341521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420341494 and 420341503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420341521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8406806 + ... + 8406855.

It is an arithmetic number, because the mean of its divisors is an integer number (86870587).

Almost surely, 2^420341525 is an apocalyptic number.

It is an amenable number.

420341525 is a deficient number, since it is larger than the sum of its proper divisors (100881997).

420341525 is a wasteful number, since it uses less digits than its factorization.

420341525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16813671 (or 16813666 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 420341525 is about 20502.2321955440. The cubic root of 420341525 is about 749.0901708015.

Adding to 420341525 its reverse (525143024), we get a palindrome (945484549).

The spelling of 420341525 in words is "four hundred twenty million, three hundred forty-one thousand, five hundred twenty-five".