43142879 has 4 divisors (see below), whose sum is σ = 46461576. Its totient is φ = 39824184.

The previous prime is 43142873. The next prime is 43142881. The reversal of 43142879 is 97824134.

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 43142879 - 2¹⁶ = 43077343 is a prime.

It is a super-2 number, since 2×43142879² = 3722616016817282, 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 (43142873) 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, 1659329 + ... + 1659354.

It is an arithmetic number, because the mean of its divisors is an integer number (11615394).

Almost surely, 2^43142879 is an apocalyptic number.

43142879 is a deficient number, since it is larger than the sum of its proper divisors (3318697).

43142879 is a wasteful number, since it uses less digits than its factorization.

43142879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318696.

The product of its digits is 48384, while the sum is 38.

The square root of 43142879 is about 6568.3239110141. The cubic root of 43142879 is about 350.7274096167.

The spelling of 43142879 in words is "forty-three million, one hundred forty-two thousand, eight hundred seventy-nine".