42834779 has 4 divisors (see below), whose sum is σ = 46129776. Its totient is φ = 39539784.

The previous prime is 42834739. The next prime is 42834793. The reversal of 42834779 is 97743824.

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 42834779 - 2⁸ = 42834523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42834739) 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, 1647479 + ... + 1647504.

It is an arithmetic number, because the mean of its divisors is an integer number (11532444).

Almost surely, 2^42834779 is an apocalyptic number.

42834779 is a deficient number, since it is larger than the sum of its proper divisors (3294997).

42834779 is a wasteful number, since it uses less digits than its factorization.

42834779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3294996.

The product of its digits is 338688, while the sum is 44.

The square root of 42834779 is about 6544.8284163911. The cubic root of 42834779 is about 349.8905208608.

The spelling of 42834779 in words is "forty-two million, eight hundred thirty-four thousand, seven hundred seventy-nine".