42789312 has 42 divisors (see below), whose sum is σ = 122649488. Its totient is φ = 14262912.

The previous prime is 42789287. The next prime is 42789359. The reversal of 42789312 is 21398724.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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, 36568 + ... + 37719.

Almost surely, 2^42789312 is an apocalyptic number.

It is an amenable number.

42789312 is an abundant number, since it is smaller than the sum of its proper divisors (79860176).

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

42789312 is a wasteful number, since it uses less digits than its factorization.

42789312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74305 (or 74292 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 42789312 is about 6541.3539882810. The cubic root of 42789312 is about 349.7666798708.

The spelling of 42789312 in words is "forty-two million, seven hundred eighty-nine thousand, three hundred twelve".