42676729 has 4 divisors (see below), whose sum is σ = 42963300. Its totient is φ = 42390160.

The previous prime is 42676727. The next prime is 42676741. The reversal of 42676729 is 92767624.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27583504 + 15093225 = 5252^2 + 3885^2 .

It is a cyclic number.

It is not a de Polignac number, because 42676729 - 2¹ = 42676727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42676721) 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, 143062 + ... + 143359.

It is an arithmetic number, because the mean of its divisors is an integer number (10740825).

Almost surely, 2^42676729 is an apocalyptic number.

It is an amenable number.

42676729 is a deficient number, since it is larger than the sum of its proper divisors (286571).

42676729 is a wasteful number, since it uses less digits than its factorization.

42676729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286570.

The product of its digits is 254016, while the sum is 43.

The square root of 42676729 is about 6532.7428389613. The cubic root of 42676729 is about 349.4596532911.

The spelling of 42676729 in words is "forty-two million, six hundred seventy-six thousand, seven hundred twenty-nine".