1427997 has 8 divisors (see below), whose sum is σ = 1910656. Its totient is φ = 948672.

The previous prime is 1427969. The next prime is 1427999. The reversal of 1427997 is 7997241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1427997 - 2¹² = 1423901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453 + ... + 1749.

It is an arithmetic number, because the mean of its divisors is an integer number (238832).

2^1427997 is an apocalyptic number.

It is an amenable number.

1427997 is a deficient number, since it is larger than the sum of its proper divisors (482659).

1427997 is a wasteful number, since it uses less digits than its factorization.

1427997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667.

The product of its digits is 31752, while the sum is 39.

The square root of 1427997 is about 1194.9882844614. The cubic root of 1427997 is about 112.6096905449.

The spelling of 1427997 in words is "one million, four hundred twenty-seven thousand, nine hundred ninety-seven".