1421181 has 12 divisors (see below), whose sum is σ = 2161120. Its totient is φ = 897480.

The previous prime is 1421159. The next prime is 1421191. The reversal of 1421181 is 1811241.

It is not a de Polignac number, because 1421181 - 2¹⁴ = 1404797 is a prime.

It is a super-2 number, since 2×1421181² = 4039510869522, 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 (1421141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3985 + ... + 4326.

2^1421181 is an apocalyptic number.

It is an amenable number.

1421181 is a deficient number, since it is larger than the sum of its proper divisors (739939).

1421181 is a wasteful number, since it uses less digits than its factorization.

1421181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8336 (or 8333 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

The square root of 1421181 is about 1192.1329623830. The cubic root of 1421181 is about 112.4302382308.

The spelling of 1421181 in words is "one million, four hundred twenty-one thousand, one hundred eighty-one".