42777730 has 16 divisors (see below), whose sum is σ = 77209920. Its totient is φ = 17064432.

The previous prime is 42777727. The next prime is 42777767. The reversal of 42777730 is 3777724.

42777730 is nontrivially palindromic in base 16.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 42777730.

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 7 ways as a sum of consecutive naturals, for example, 1854 + ... + 9433.

It is an arithmetic number, because the mean of its divisors is an integer number (4825620).

Almost surely, 2^42777730 is an apocalyptic number.

42777730 is a deficient number, since it is larger than the sum of its proper divisors (34432190).

42777730 is a wasteful number, since it uses less digits than its factorization.

42777730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11673.

The product of its (nonzero) digits is 57624, while the sum is 37.

The square root of 42777730 is about 6540.4686376436. The cubic root of 42777730 is about 349.7351193162.

The spelling of 42777730 in words is "forty-two million, seven hundred seventy-seven thousand, seven hundred thirty".