43042131 has 32 divisors (see below), whose sum is σ = 72599040. Its totient is φ = 24948000.

The previous prime is 43042081. The next prime is 43042133. The reversal of 43042131 is 13124034.

It is not a de Polignac number, because 43042131 - 2⁶ = 43042067 is a prime.

It is a super-2 number, since 2×43042131² = 3705250082042322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43042133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3681 + ... + 9981.

It is an arithmetic number, because the mean of its divisors is an integer number (2268720).

Almost surely, 2^43042131 is an apocalyptic number.

43042131 is a deficient number, since it is larger than the sum of its proper divisors (29556909).

43042131 is a wasteful number, since it uses less digits than its factorization.

43042131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6344 (or 6338 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 43042131 is about 6560.6501964363. The cubic root of 43042131 is about 350.4541885841.

Adding to 43042131 its reverse (13124034), we get a palindrome (56166165).

The spelling of 43042131 in words is "forty-three million, forty-two thousand, one hundred thirty-one".