42930829 has 2 divisors, whose sum is σ = 42930830. Its totient is φ = 42930828.

The previous prime is 42930827. The next prime is 42930863. The reversal of 42930829 is 92803924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38415204 + 4515625 = 6198^2 + 2125^2 .

It is a cyclic number.

It is not a de Polignac number, because 42930829 - 2¹ = 42930827 is a prime.

Together with 42930827, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42930827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21465414 + 21465415.

It is an arithmetic number, because the mean of its divisors is an integer number (21465415).

Almost surely, 2^42930829 is an apocalyptic number.

It is an amenable number.

42930829 is a deficient number, since it is larger than the sum of its proper divisors (1).

42930829 is an equidigital number, since it uses as much as digits as its factorization.

42930829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 42930829 is about 6552.1621622179. The cubic root of 42930829 is about 350.1518497557.

The spelling of 42930829 in words is "forty-two million, nine hundred thirty thousand, eight hundred twenty-nine".