42788730 has 16 divisors (see below), whose sum is σ = 102693024. Its totient is φ = 11410320.

The previous prime is 42788729. The next prime is 42788743. The reversal of 42788730 is 3788724.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713116 + ... + 713175.

It is an arithmetic number, because the mean of its divisors is an integer number (6418314).

Almost surely, 2^42788730 is an apocalyptic number.

42788730 is an abundant number, since it is smaller than the sum of its proper divisors (59904294).

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

42788730 is a wasteful number, since it uses less digits than its factorization.

42788730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426301.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 42788730 is about 6541.3095019270. The cubic root of 42788730 is about 349.7650940765.

The spelling of 42788730 in words is "forty-two million, seven hundred eighty-eight thousand, seven hundred thirty".