43009245 has 64 divisors (see below), whose sum is σ = 81100800. Its totient is φ = 21591360.

The previous prime is 43009231. The next prime is 43009247. The reversal of 43009245 is 54290034.

It is not a de Polignac number, because 43009245 - 2⁴ = 43009229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43009247) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 179836 + ... + 180074.

It is an arithmetic number, because the mean of its divisors is an integer number (1267200).

Almost surely, 2^43009245 is an apocalyptic number.

43009245 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43009245 is a deficient number, since it is larger than the sum of its proper divisors (38091555).

43009245 is a wasteful number, since it uses less digits than its factorization.

43009245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 43009245 is about 6558.1434110577. The cubic root of 43009245 is about 350.3649119256.

Adding to 43009245 its reverse (54290034), we get a palindrome (97299279).

The spelling of 43009245 in words is "forty-three million, nine thousand, two hundred forty-five".