42928929 has 6 divisors (see below), whose sum is σ = 62008466. Its totient is φ = 28619280.

The previous prime is 42928871. The next prime is 42928937. The reversal of 42928929 is 92982924.

It can be written as a sum of positive squares in only one way, i.e., 42928704 + 225 = 6552^2 + 15^2 .

It is not a de Polignac number, because 42928929 - 2¹⁶ = 42863393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42928129) 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 5 ways as a sum of consecutive naturals, for example, 2384932 + ... + 2384949.

Almost surely, 2^42928929 is an apocalyptic number.

It is an amenable number.

42928929 is a deficient number, since it is larger than the sum of its proper divisors (19079537).

42928929 is a wasteful number, since it uses less digits than its factorization.

42928929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4769887 (or 4769884 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 42928929 is about 6552.0171703072. The cubic root of 42928929 is about 350.1466840947.

The spelling of 42928929 in words is "forty-two million, nine hundred twenty-eight thousand, nine hundred twenty-nine".