7442181 has 12 divisors (see below), whose sum is σ = 10803520. Its totient is φ = 4936680.

The previous prime is 7442161. The next prime is 7442189. The reversal of 7442181 is 1812447.

It is not a de Polignac number, because 7442181 - 2⁶ = 7442117 is a prime.

It is a super-2 number, since 2×7442181² = 110772116073522, 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 (7442189) 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 11 ways as a sum of consecutive naturals, for example, 61 + ... + 3858.

Almost surely, 2^7442181 is an apocalyptic number.

It is an amenable number.

7442181 is a deficient number, since it is larger than the sum of its proper divisors (3361339).

7442181 is a wasteful number, since it uses less digits than its factorization.

7442181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136 (or 4133 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 7442181 is about 2728.0361067992. The cubic root of 7442181 is about 195.2390756029.

The spelling of 7442181 in words is "seven million, four hundred forty-two thousand, one hundred eighty-one".