42943679 has 4 divisors (see below), whose sum is σ = 43067784. Its totient is φ = 42819576.

The previous prime is 42943651. The next prime is 42943697. The reversal of 42943679 is 97634924.

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 42943679 - 2⁸ = 42943423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42943639) 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, 61532 + ... + 62225.

It is an arithmetic number, because the mean of its divisors is an integer number (10766946).

Almost surely, 2^42943679 is an apocalyptic number.

42943679 is a deficient number, since it is larger than the sum of its proper divisors (124105).

42943679 is a wasteful number, since it uses less digits than its factorization.

42943679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124104.

The product of its digits is 326592, while the sum is 44.

The square root of 42943679 is about 6553.1426811874. The cubic root of 42943679 is about 350.1867819364.

The spelling of 42943679 in words is "forty-two million, nine hundred forty-three thousand, six hundred seventy-nine".