43143442 has 4 divisors (see below), whose sum is σ = 64715166. Its totient is φ = 21571720.

The previous prime is 43143437. The next prime is 43143461. The reversal of 43143442 is 24434134.

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

It can be written as a sum of positive squares in only one way, i.e., 43046721 + 96721 = 6561^2 + 311^2 .

It is a super-2 number, since 2×43143442² = 3722713175214728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10785859 + ... + 10785862.

Almost surely, 2^43143442 is an apocalyptic number.

43143442 is a deficient number, since it is larger than the sum of its proper divisors (21571724).

43143442 is a wasteful number, since it uses less digits than its factorization.

43143442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21571723.

The product of its digits is 4608, while the sum is 25.

The square root of 43143442 is about 6568.3667680787. The cubic root of 43143442 is about 350.7289352348.

Adding to 43143442 its reverse (24434134), we get a palindrome (67577576).

The spelling of 43143442 in words is "forty-three million, one hundred forty-three thousand, four hundred forty-two".