42390695 has 16 divisors (see below), whose sum is σ = 51667968. Its totient is φ = 33384960.

The previous prime is 42390659. The next prime is 42390697. The reversal of 42390695 is 59609324.

42390695 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 42390695 - 2¹⁸ = 42128551 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42390697) 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, 152897 + ... + 153173.

It is an arithmetic number, because the mean of its divisors is an integer number (3229248).

Almost surely, 2^42390695 is an apocalyptic number.

42390695 is a deficient number, since it is larger than the sum of its proper divisors (9277273).

42390695 is a wasteful number, since it uses less digits than its factorization.

42390695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 42390695 is about 6510.8136972271. The cubic root of 42390695 is about 348.6771699085.

The spelling of 42390695 in words is "forty-two million, three hundred ninety thousand, six hundred ninety-five".