43442401 has 4 divisors (see below), whose sum is σ = 43470100. Its totient is φ = 43414704.

The previous prime is 43442393. The next prime is 43442453. The reversal of 43442401 is 10424434.

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 10368400 + 33074001 = 3220^2 + 5751^2 .

It is a cyclic number.

It is not a de Polignac number, because 43442401 - 2³ = 43442393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43442461) 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, 11346 + ... + 14683.

It is an arithmetic number, because the mean of its divisors is an integer number (10867525).

Almost surely, 2^43442401 is an apocalyptic number.

It is an amenable number.

43442401 is a deficient number, since it is larger than the sum of its proper divisors (27699).

43442401 is a wasteful number, since it uses less digits than its factorization.

43442401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27698.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 43442401 is about 6591.0849637977. The cubic root of 43442401 is about 351.5371871461.

Adding to 43442401 its reverse (10424434), we get a palindrome (53866835).

The spelling of 43442401 in words is "forty-three million, four hundred forty-two thousand, four hundred one".