420232545 has 24 divisors (see below), whose sum is σ = 731054376. Its totient is φ = 223308288.

The previous prime is 420232541. The next prime is 420232583. The reversal of 420232545 is 545232024.

It is a happy number.

420232545 is a `hidden beast` number, since 420 + 232 + 5 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1498176 + 418734369 = 1224^2 + 20463^2 .

It is not a de Polignac number, because 420232545 - 2² = 420232541 is a prime.

It is a super-3 number, since 3×420232545³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (420232541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4392 + ... + 29321.

It is an arithmetic number, because the mean of its divisors is an integer number (30460599).

Almost surely, 2^420232545 is an apocalyptic number.

420232545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

420232545 is a deficient number, since it is larger than the sum of its proper divisors (310821831).

420232545 is a wasteful number, since it uses less digits than its factorization.

420232545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34001 (or 33998 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 420232545 is about 20499.5742638719. The cubic root of 420232545 is about 749.0254274931.

Adding to 420232545 its reverse (545232024), we get a palindrome (965464569).

The spelling of 420232545 in words is "four hundred twenty million, two hundred thirty-two thousand, five hundred forty-five".