942181 has 8 divisors (see below), whose sum is σ = 994680. Its totient is φ = 891072.

The previous prime is 942169. The next prime is 942187. The reversal of 942181 is 181249.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22500 + 919681 = 150^2 + 959^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 942181 - 2⁹ = 941669 is a prime.

It is a super-2 number, since 2×942181² = 1775410073522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (942187) 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, 1231 + ... + 1843.

It is an arithmetic number, because the mean of its divisors is an integer number (124335).

2⁹⁴²¹⁸¹ is an apocalyptic number.

It is an amenable number.

942181 is a deficient number, since it is larger than the sum of its proper divisors (52499).

942181 is a wasteful number, since it uses less digits than its factorization.

942181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695.

The product of its digits is 576, while the sum is 25.

The square root of 942181 is about 970.6600846846. The cubic root of 942181 is about 98.0343139591.

The spelling of 942181 in words is "nine hundred forty-two thousand, one hundred eighty-one".