42787995 has 16 divisors (see below), whose sum is σ = 68900640. Its totient is φ = 22673664.

The previous prime is 42787973. The next prime is 42787999. The reversal of 42787995 is 59978724.

42787995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42787995 - 2¹² = 42783899 is a prime.

It is a super-2 number, since 2×42787995² = 3661625032240050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42787999) 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, 6730 + ... + 11439.

It is an arithmetic number, because the mean of its divisors is an integer number (4306290).

Almost surely, 2^42787995 is an apocalyptic number.

42787995 is a deficient number, since it is larger than the sum of its proper divisors (26112645).

42787995 is a wasteful number, since it uses less digits than its factorization.

42787995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18334.

The product of its digits is 1270080, while the sum is 51.

The square root of 42787995 is about 6541.2533202743. The cubic root of 42787995 is about 349.7630913777.

The spelling of 42787995 in words is "forty-two million, seven hundred eighty-seven thousand, nine hundred ninety-five".