42906829 has 4 divisors (see below), whose sum is σ = 49036384. Its totient is φ = 36777276.

The previous prime is 42906803. The next prime is 42906833. The reversal of 42906829 is 92860924.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42906829 - 2⁷ = 42906701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42906791 and 42906800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42906329) 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, 3064767 + ... + 3064780.

It is an arithmetic number, because the mean of its divisors is an integer number (12259096).

Almost surely, 2^42906829 is an apocalyptic number.

It is an amenable number.

42906829 is a deficient number, since it is larger than the sum of its proper divisors (6129555).

42906829 is an equidigital number, since it uses as much as digits as its factorization.

42906829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6129554.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 42906829 is about 6550.3304496796. The cubic root of 42906829 is about 350.0865881006.

The spelling of 42906829 in words is "forty-two million, nine hundred six thousand, eight hundred twenty-nine".