43000101 has 6 divisors (see below), whose sum is σ = 62111270. Its totient is φ = 28666728.

The previous prime is 43000093. The next prime is 43000109. The reversal of 43000101 is 10100034.

It is an interprime number because it is at equal distance from previous prime (43000093) and next prime (43000109).

It can be written as a sum of positive squares in only one way, i.e., 31911201 + 11088900 = 5649^2 + 3330^2 .

It is not a de Polignac number, because 43000101 - 2³ = 43000093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 4777789 = 43000101 / (4 + 3 + 0 + 0 + 0 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43000109) 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, 2388886 + ... + 2388903.

Almost surely, 2^43000101 is an apocalyptic number.

It is an amenable number.

43000101 is a deficient number, since it is larger than the sum of its proper divisors (19111169).

43000101 is a wasteful number, since it uses less digits than its factorization.

43000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777795 (or 4777792 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 43000101 is about 6557.4462254753. The cubic root of 43000101 is about 350.3400803355.

Adding to 43000101 its reverse (10100034), we get a palindrome (53100135).

The spelling of 43000101 in words is "forty-three million, one hundred one", and thus it is an aban number.