1427671 has 4 divisors (see below), whose sum is σ = 1631632. Its totient is φ = 1223712.

The previous prime is 1427663. The next prime is 1427681. The reversal of 1427671 is 1767241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1767241 = 7 ⋅252463.

It is not a de Polignac number, because 1427671 - 2³ = 1427663 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427681) 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, 101970 + ... + 101983.

It is an arithmetic number, because the mean of its divisors is an integer number (407908).

2^1427671 is an apocalyptic number.

1427671 is a deficient number, since it is larger than the sum of its proper divisors (203961).

1427671 is an equidigital number, since it uses as much as digits as its factorization.

1427671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203960.

The product of its digits is 2352, while the sum is 28.

The square root of 1427671 is about 1194.8518736647. The cubic root of 1427671 is about 112.6011206032.

The spelling of 1427671 in words is "one million, four hundred twenty-seven thousand, six hundred seventy-one".