42075099 has 16 divisors (see below), whose sum is σ = 68000640. Its totient is φ = 25499880.

The previous prime is 42075071. The next prime is 42075109. The reversal of 42075099 is 99057024.

It is not a de Polignac number, because 42075099 - 2¹⁵ = 42042331 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (42075049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70537 + ... + 71130.

It is an arithmetic number, because the mean of its divisors is an integer number (4250040).

Almost surely, 2^42075099 is an apocalyptic number.

42075099 is a deficient number, since it is larger than the sum of its proper divisors (25925541).

42075099 is a wasteful number, since it uses less digits than its factorization.

42075099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141687 (or 141681 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 42075099 is about 6486.5321243327. The cubic root of 42075099 is about 347.8097205916.

The spelling of 42075099 in words is "forty-two million, seventy-five thousand, ninety-nine".