43000442331401 has 4 divisors (see below), whose sum is σ = 43002514762500. Its totient is φ = 42998369900304.

The previous prime is 43000442331397. The next prime is 43000442331421. The reversal of 43000442331401 is 10413324400034.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22531160890000 + 20469281441401 = 4746700^2 + 4524299^2 .

It is a cyclic number.

It is not a de Polignac number, because 43000442331401 - 2² = 43000442331397 is a prime.

It is a super-2 number, since 2×43000442331401² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43000442331421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036184426 + ... + 1036225923.

It is an arithmetic number, because the mean of its divisors is an integer number (10750628690625).

Almost surely, 2^{43000442331401} is an apocalyptic number.

It is an amenable number.

43000442331401 is a deficient number, since it is larger than the sum of its proper divisors (2072431099).

43000442331401 is a wasteful number, since it uses less digits than its factorization.

43000442331401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072431098.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 43000442331401 its reverse (10413324400034), we get a palindrome (53413766731435).

The spelling of 43000442331401 in words is "forty-three trillion, four hundred forty-two million, three hundred thirty-one thousand, four hundred one".