42769820 has 12 divisors (see below), whose sum is σ = 89816664. Its totient is φ = 17107920.

The previous prime is 42769819. The next prime is 42769829. The reversal of 42769820 is 2896724.

42769820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42769829) 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 3 ways as a sum of consecutive naturals, for example, 1069226 + ... + 1069265.

It is an arithmetic number, because the mean of its divisors is an integer number (7484722).

Almost surely, 2^42769820 is an apocalyptic number.

It is an amenable number.

42769820 is an abundant number, since it is smaller than the sum of its proper divisors (47046844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42769820 is a wasteful number, since it uses less digits than its factorization.

42769820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138500 (or 2138498 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 42769820 is about 6539.8639129572. The cubic root of 42769820 is about 349.7135615624.

The spelling of 42769820 in words is "forty-two million, seven hundred sixty-nine thousand, eight hundred twenty".