42789556 has 12 divisors (see below), whose sum is σ = 75150180. Its totient is φ = 21318080.

The previous prime is 42789547. The next prime is 42789563. The reversal of 42789556 is 65598724.

42789556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 28090000 + 14699556 = 5300^2 + 3834^2 .

It is a super-2 number, since 2×42789556² = 3661892205354272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 17911 + ... + 20158.

It is an arithmetic number, because the mean of its divisors is an integer number (6262515).

Almost surely, 2^42789556 is an apocalyptic number.

It is an amenable number.

42789556 is a deficient number, since it is larger than the sum of its proper divisors (32360624).

42789556 is a wasteful number, since it uses less digits than its factorization.

42789556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38354 (or 38352 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 42789556 is about 6541.3726388274. The cubic root of 42789556 is about 349.7673447012.

The spelling of 42789556 in words is "forty-two million, seven hundred eighty-nine thousand, five hundred fifty-six".