1421171 has 4 divisors (see below), whose sum is σ = 1435344. Its totient is φ = 1407000.

The previous prime is 1421159. The next prime is 1421191. The reversal of 1421171 is 1711241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1711241 = 7 ⋅244463.

It is a cyclic number.

It is not a de Polignac number, because 1421171 - 2¹⁸ = 1159027 is a prime.

It is a super-2 number, since 2×1421171² = 4039454022482, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 6935 + ... + 7136.

It is an arithmetic number, because the mean of its divisors is an integer number (358836).

2^1421171 is an apocalyptic number.

1421171 is a deficient number, since it is larger than the sum of its proper divisors (14173).

1421171 is a wasteful number, since it uses less digits than its factorization.

1421171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14172.

The product of its digits is 56, while the sum is 17.

The square root of 1421171 is about 1192.1287682126. The cubic root of 1421171 is about 112.4299745288.

The spelling of 1421171 in words is "one million, four hundred twenty-one thousand, one hundred seventy-one".