1722043 has 4 divisors (see below), whose sum is σ = 1725088. Its totient is φ = 1719000.

The previous prime is 1722037. The next prime is 1722053. The reversal of 1722043 is 3402271.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1722043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1722043.

It is not an unprimeable number, because it can be changed into a prime (1722013) 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, 396 + ... + 1897.

It is an arithmetic number, because the mean of its divisors is an integer number (431272).

2^1722043 is an apocalyptic number.

1722043 is a deficient number, since it is larger than the sum of its proper divisors (3045).

1722043 is an equidigital number, since it uses as much as digits as its factorization.

1722043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 1722043 is about 1312.2663601571. The cubic root of 1722043 is about 119.8619477221.

The spelling of 1722043 in words is "one million, seven hundred twenty-two thousand, forty-three".