42380776 has 8 divisors (see below), whose sum is σ = 79463970. Its totient is φ = 21190384.

The previous prime is 42380771. The next prime is 42380777. The reversal of 42380776 is 67708324.

42380776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 42380100 + 676 = 6510^2 + 26^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×42380776² = 3592260348724352, which contains 22 as substring.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (42380771) 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 as a sum of consecutive naturals, namely, 2648791 + ... + 2648806.

Almost surely, 2^42380776 is an apocalyptic number.

It is an amenable number.

42380776 is a deficient number, since it is larger than the sum of its proper divisors (37083194).

42380776 is a wasteful number, since it uses less digits than its factorization.

42380776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5297603 (or 5297599 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 42380776 is about 6510.0519199158. The cubic root of 42380776 is about 348.6499721265.

The spelling of 42380776 in words is "forty-two million, three hundred eighty thousand, seven hundred seventy-six".