1997234 has 4 divisors (see below), whose sum is σ = 2995854. Its totient is φ = 998616.

The previous prime is 1997231. The next prime is 1997243. The reversal of 1997234 is 4327991.

Added to its reverse (4327991) it gives a square (6325225 = 2515²).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4327991 = 19 ⋅227789.

It can be written as a sum of positive squares in only one way, i.e., 1555009 + 442225 = 1247^2 + 665^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1997194 and 1997203.

It is not an unprimeable number, because it can be changed into a prime (1997231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499307 + ... + 499310.

2^1997234 is an apocalyptic number.

1997234 is a deficient number, since it is larger than the sum of its proper divisors (998620).

1997234 is an equidigital number, since it uses as much as digits as its factorization.

1997234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998619.

The product of its digits is 13608, while the sum is 35.

The square root of 1997234 is about 1413.2352953419. The cubic root of 1997234 is about 125.9339958325.

Adding to 1997234 its reverse (4327991), we get a square (6325225 = 2515²).

The spelling of 1997234 in words is "one million, nine hundred ninety-seven thousand, two hundred thirty-four".