43042140401 has 4 divisors (see below), whose sum is σ = 46353074292. Its totient is φ = 39731206512.

The previous prime is 43042140347. The next prime is 43042140443. The reversal of 43042140401 is 10404124034.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10404124034 = 2 ⋅5202062017.

It can be written as a sum of positive squares in 2 ways, for example, as 2621440000 + 40420700401 = 51200^2 + 201049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43042140401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43042140601) 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, 1655466926 + ... + 1655466951.

It is an arithmetic number, because the mean of its divisors is an integer number (11588268573).

Almost surely, 2^43042140401 is an apocalyptic number.

It is an amenable number.

43042140401 is a deficient number, since it is larger than the sum of its proper divisors (3310933891).

43042140401 is a wasteful number, since it uses less digits than its factorization.

43042140401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310933890.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 43042140401 its reverse (10404124034), we get a palindrome (53446264435).

The spelling of 43042140401 in words is "forty-three billion, forty-two million, one hundred forty thousand, four hundred one".