42138095 has 8 divisors (see below), whose sum is σ = 51423120. Its totient is φ = 33138880.

The previous prime is 42138077. The next prime is 42138097. The reversal of 42138095 is 59083124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42138095 - 2¹⁶ = 42072559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42138097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71126 + ... + 71715.

It is an arithmetic number, because the mean of its divisors is an integer number (6427890).

Almost surely, 2^42138095 is an apocalyptic number.

42138095 is a deficient number, since it is larger than the sum of its proper divisors (9285025).

42138095 is a wasteful number, since it uses less digits than its factorization.

42138095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142905.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 42138095 is about 6491.3862155937. The cubic root of 42138095 is about 347.9832174714.

The spelling of 42138095 in words is "forty-two million, one hundred thirty-eight thousand, ninety-five".