42180941 has 4 divisors (see below), whose sum is σ = 46015584. Its totient is φ = 38346300.

The previous prime is 42180937. The next prime is 42180947. The reversal of 42180941 is 14908124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42180941 - 2² = 42180937 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 (42180947) 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, 1917305 + ... + 1917326.

It is an arithmetic number, because the mean of its divisors is an integer number (11503896).

Almost surely, 2^42180941 is an apocalyptic number.

It is an amenable number.

42180941 is a deficient number, since it is larger than the sum of its proper divisors (3834643).

42180941 is a wasteful number, since it uses less digits than its factorization.

42180941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834642.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 42180941 is about 6494.6855967014. The cubic root of 42180941 is about 348.1011205897.

The spelling of 42180941 in words is "forty-two million, one hundred eighty thousand, nine hundred forty-one".