42930861 has 16 divisors (see below), whose sum is σ = 60825600. Its totient is φ = 26857008.

The previous prime is 42930829. The next prime is 42930863. The reversal of 42930861 is 16803924.

42930861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42930861 - 2⁵ = 42930829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42930863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2580 + ... + 9618.

It is an arithmetic number, because the mean of its divisors is an integer number (3801600).

Almost surely, 2^42930861 is an apocalyptic number.

It is an amenable number.

42930861 is a deficient number, since it is larger than the sum of its proper divisors (17894739).

42930861 is a wasteful number, since it uses less digits than its factorization.

42930861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7168.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 42930861 is about 6552.1646041595. The cubic root of 42930861 is about 350.1519367550.

The spelling of 42930861 in words is "forty-two million, nine hundred thirty thousand, eight hundred sixty-one".