42786380 has 48 divisors (see below), whose sum is σ = 110591040. Its totient is φ = 13540608.

The previous prime is 42786379. The next prime is 42786383. The reversal of 42786380 is 8368724.

42786380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42786383) 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, 9935 + ... + 13574.

It is an arithmetic number, because the mean of its divisors is an integer number (2303980).

Almost surely, 2^42786380 is an apocalyptic number.

It is an amenable number.

42786380 is an abundant number, since it is smaller than the sum of its proper divisors (67804660).

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

42786380 is a wasteful number, since it uses less digits than its factorization.

42786380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23538 (or 23536 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 42786380 is about 6541.1298718188. The cubic root of 42786380 is about 349.7586908093.

The spelling of 42786380 in words is "forty-two million, seven hundred eighty-six thousand, three hundred eighty".