42195087 has 80 divisors (see below), whose sum is σ = 75271680. Its totient is φ = 23284800.

The previous prime is 42195079. The next prime is 42195113. The reversal of 42195087 is 78059124.

42195087 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 42195087 - 2³ = 42195079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42195287) 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 79 ways as a sum of consecutive naturals, for example, 594262 + ... + 594332.

It is an arithmetic number, because the mean of its divisors is an integer number (940896).

Almost surely, 2^42195087 is an apocalyptic number.

42195087 is a deficient number, since it is larger than the sum of its proper divisors (33076593).

42195087 is a wasteful number, since it uses less digits than its factorization.

42195087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 42195087 is about 6495.7745496592. The cubic root of 42195087 is about 348.1400298535.

The spelling of 42195087 in words is "forty-two million, one hundred ninety-five thousand, eighty-seven".