42910529 has 4 divisors (see below), whose sum is σ = 42947460. Its totient is φ = 42873600.

The previous prime is 42910513. The next prime is 42910561. The reversal of 42910529 is 92501924.

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 204304 + 42706225 = 452^2 + 6535^2 .

It is a cyclic number.

It is not a de Polignac number, because 42910529 - 2⁴ = 42910513 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42910495 and 42910504.

It is not an unprimeable number, because it can be changed into a prime (42910579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16664 + ... + 19065.

It is an arithmetic number, because the mean of its divisors is an integer number (10736865).

Almost surely, 2^42910529 is an apocalyptic number.

It is an amenable number.

42910529 is a deficient number, since it is larger than the sum of its proper divisors (36931).

42910529 is a wasteful number, since it uses less digits than its factorization.

42910529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36930.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 42910529 is about 6550.6128720907. The cubic root of 42910529 is about 350.0966508589.

The spelling of 42910529 in words is "forty-two million, nine hundred ten thousand, five hundred twenty-nine".