1421117 has 4 divisors (see below), whose sum is σ = 1444476. Its totient is φ = 1397760.

The previous prime is 1421113. The next prime is 1421141. The reversal of 1421117 is 7111241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7111241 = 47 ⋅151303.

It can be written as a sum of positive squares in 2 ways, for example, as 89401 + 1331716 = 299^2 + 1154^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421117 - 2² = 1421113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421095 and 1421104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421113) 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, 11588 + ... + 11709.

It is an arithmetic number, because the mean of its divisors is an integer number (361119).

2^1421117 is an apocalyptic number.

It is an amenable number.

1421117 is a deficient number, since it is larger than the sum of its proper divisors (23359).

1421117 is an equidigital number, since it uses as much as digits as its factorization.

1421117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23358.

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

The square root of 1421117 is about 1192.1061194374. The cubic root of 1421117 is about 112.4285505163.

Adding to 1421117 its reverse (7111241), we get a palindrome (8532358).

The spelling of 1421117 in words is "one million, four hundred twenty-one thousand, one hundred seventeen".