42780522 has 16 divisors (see below), whose sum is σ = 85921920. Its totient is φ = 14200032.

The previous prime is 42780503. The next prime is 42780523. The reversal of 42780522 is 22508724.

42780522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42780522.

It is not an unprimeable number, because it can be changed into a prime (42780523) 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 7 ways as a sum of consecutive naturals, for example, 13483 + ... + 16350.

It is an arithmetic number, because the mean of its divisors is an integer number (5370120).

Almost surely, 2^42780522 is an apocalyptic number.

42780522 is an abundant number, since it is smaller than the sum of its proper divisors (43141398).

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

42780522 is a wasteful number, since it uses less digits than its factorization.

42780522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30077.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 42780522 is about 6540.6820745240. The cubic root of 42780522 is about 349.7427279420.

The spelling of 42780522 in words is "forty-two million, seven hundred eighty thousand, five hundred twenty-two".