42140141 has 4 divisors (see below), whose sum is σ = 42935292. Its totient is φ = 41344992.

The previous prime is 42140123. The next prime is 42140167. The reversal of 42140141 is 14104124.

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 17598025 + 24542116 = 4195^2 + 4954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42140141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42143141) 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, 397496 + ... + 397601.

It is an arithmetic number, because the mean of its divisors is an integer number (10733823).

Almost surely, 2^42140141 is an apocalyptic number.

It is an amenable number.

42140141 is a deficient number, since it is larger than the sum of its proper divisors (795151).

42140141 is an equidigital number, since it uses as much as digits as its factorization.

42140141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795150.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 42140141 is about 6491.5438071386. The cubic root of 42140141 is about 347.9888494467.

Adding to 42140141 its reverse (14104124), we get a palindrome (56244265).

The spelling of 42140141 in words is "forty-two million, one hundred forty thousand, one hundred forty-one".