1992071 has 4 divisors (see below), whose sum is σ = 2001000. Its totient is φ = 1983144.

The previous prime is 1992049. The next prime is 1992073. The reversal of 1992071 is 1702991.

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 1992071 - 2¹⁰ = 1991047 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 (1992073) 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, 4121 + ... + 4578.

It is an arithmetic number, because the mean of its divisors is an integer number (500250).

2^1992071 is an apocalyptic number.

1992071 is a deficient number, since it is larger than the sum of its proper divisors (8929).

1992071 is an equidigital number, since it uses as much as digits as its factorization.

1992071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8928.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 1992071 is about 1411.4074535725. The cubic root of 1992071 is about 125.8253859090.

It can be divided in two parts, 19920 and 71, that added together give a palindrome (19991).

The spelling of 1992071 in words is "one million, nine hundred ninety-two thousand, seventy-one".