420233445 has 12 divisors (see below), whose sum is σ = 728404716. Its totient is φ = 224124480.

The previous prime is 420233417. The next prime is 420233497. The reversal of 420233445 is 544332024.

420233445 is a `hidden beast` number, since 420 + 233 + 4 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 63250209 + 356983236 = 7953^2 + 18894^2 .

It is not a de Polignac number, because 420233445 - 2⁵ = 420233413 is a prime.

It is a super-2 number, since 2×420233445² = 353192296593136050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4669216 + ... + 4669305.

It is an arithmetic number, because the mean of its divisors is an integer number (60700393).

Almost surely, 2^420233445 is an apocalyptic number.

420233445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

420233445 is a deficient number, since it is larger than the sum of its proper divisors (308171271).

420233445 is a wasteful number, since it uses less digits than its factorization.

420233445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9338532 (or 9338529 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 420233445 is about 20499.5962155356. The cubic root of 420233445 is about 749.0259622148.

Adding to 420233445 its reverse (544332024), we get a palindrome (964565469).

The spelling of 420233445 in words is "four hundred twenty million, two hundred thirty-three thousand, four hundred forty-five".