42141109 has 4 divisors (see below), whose sum is σ = 42193260. Its totient is φ = 42088960.

The previous prime is 42141103. The next prime is 42141119. The reversal of 42141109 is 90114124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25150225 + 16990884 = 5015^2 + 4122^2 .

It is a cyclic number.

It is not a de Polignac number, because 42141109 - 2¹³ = 42132917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42141109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42141103) 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 3 ways as a sum of consecutive naturals, for example, 24844 + ... + 26485.

It is an arithmetic number, because the mean of its divisors is an integer number (10548315).

Almost surely, 2^42141109 is an apocalyptic number.

It is an amenable number.

42141109 is a deficient number, since it is larger than the sum of its proper divisors (52151).

42141109 is an equidigital number, since it uses as much as digits as its factorization.

42141109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52150.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 42141109 is about 6491.6183652461. The cubic root of 42141109 is about 347.9915139737.

The spelling of 42141109 in words is "forty-two million, one hundred forty-one thousand, one hundred nine".