42138195 has 16 divisors (see below), whose sum is σ = 73550592. Its totient is φ = 20430560.

The previous prime is 42138191. The next prime is 42138199. The reversal of 42138195 is 59183124.

42138195 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42138191) and next prime (42138199).

It is not a de Polignac number, because 42138195 - 2² = 42138191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (42138191) 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, 127527 + ... + 127856.

It is an arithmetic number, because the mean of its divisors is an integer number (4596912).

Almost surely, 2^42138195 is an apocalyptic number.

42138195 is a deficient number, since it is larger than the sum of its proper divisors (31412397).

42138195 is a wasteful number, since it uses less digits than its factorization.

42138195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255402.

The product of its digits is 8640, while the sum is 33.

The square root of 42138195 is about 6491.3939181042. The cubic root of 42138195 is about 347.9834927432.

The spelling of 42138195 in words is "forty-two million, one hundred thirty-eight thousand, one hundred ninety-five".