43007145 has 16 divisors (see below), whose sum is σ = 71184960. Its totient is φ = 22145984.

The previous prime is 43007141. The next prime is 43007179. The reversal of 43007145 is 54170034.

43007145 = 471² + 472² + ... + 615².

It is a cyclic number.

It is not a de Polignac number, because 43007145 - 2² = 43007141 is a prime.

It is a super-2 number, since 2×43007145² = 3699229042102050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43007141) 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 15 ways as a sum of consecutive naturals, for example, 48999 + ... + 49868.

It is an arithmetic number, because the mean of its divisors is an integer number (4449060).

Almost surely, 2^43007145 is an apocalyptic number.

It is an amenable number.

43007145 is a deficient number, since it is larger than the sum of its proper divisors (28177815).

43007145 is a wasteful number, since it uses less digits than its factorization.

43007145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98904.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 43007145 is about 6557.9833028150. The cubic root of 43007145 is about 350.3592094440.

Adding to 43007145 its reverse (54170034), we get a palindrome (97177179).

The spelling of 43007145 in words is "forty-three million, seven thousand, one hundred forty-five".