1427971 has 4 divisors (see below), whose sum is σ = 1449352. Its totient is φ = 1406592.

The previous prime is 1427969. The next prime is 1427999. The reversal of 1427971 is 1797241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1427971 - 2¹ = 1427969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1427911) 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, 10590 + ... + 10723.

It is an arithmetic number, because the mean of its divisors is an integer number (362338).

2^1427971 is an apocalyptic number.

1427971 is a deficient number, since it is larger than the sum of its proper divisors (21381).

1427971 is an equidigital number, since it uses as much as digits as its factorization.

1427971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21380.

The product of its digits is 3528, while the sum is 31.

The square root of 1427971 is about 1194.9774056441. The cubic root of 1427971 is about 112.6090071004.

The spelling of 1427971 in words is "one million, four hundred twenty-seven thousand, nine hundred seventy-one".