43142431 has 4 divisors (see below), whose sum is σ = 43157664. Its totient is φ = 43127200.

The previous prime is 43142423. The next prime is 43142467. The reversal of 43142431 is 13424134.

43142431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 43142431 - 2³ = 43142423 is a prime.

It is a super-2 number, since 2×43142431² = 3722538705179522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43142531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1975 + ... + 9496.

It is an arithmetic number, because the mean of its divisors is an integer number (10789416).

Almost surely, 2^43142431 is an apocalyptic number.

43142431 is a deficient number, since it is larger than the sum of its proper divisors (15233).

43142431 is a wasteful number, since it uses less digits than its factorization.

43142431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15232.

The product of its digits is 1152, while the sum is 22.

The square root of 43142431 is about 6568.2898078571. The cubic root of 43142431 is about 350.7261956162.

Adding to 43142431 its reverse (13424134), we get a palindrome (56566565).

The spelling of 43142431 in words is "forty-three million, one hundred forty-two thousand, four hundred thirty-one".