1997042 has 8 divisors (see below), whose sum is σ = 3004716. Its totient is φ = 995472.

The previous prime is 1997029. The next prime is 1997053. The reversal of 1997042 is 2407991.

It can be written as a sum of positive squares in 2 ways, for example, as 1819801 + 177241 = 1349^2 + 421^2 .

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 593 + ... + 2084.

2^1997042 is an apocalyptic number.

1997042 is a deficient number, since it is larger than the sum of its proper divisors (1007674).

1997042 is a wasteful number, since it uses less digits than its factorization.

1997042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1997042 is about 1413.1673644689. The cubic root of 1997042 is about 125.9299602343.

The spelling of 1997042 in words is "one million, nine hundred ninety-seven thousand, forty-two".