1940201 has 2 divisors, whose sum is σ = 1940202. Its totient is φ = 1940200.

The previous prime is 1940173. The next prime is 1940219. The reversal of 1940201 is 1020491.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 90601 = 1360^2 + 301^2 .

It is an emirp because it is prime and its reverse (1020491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1940201 - 2⁶ = 1940137 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1940201.

It is not a weakly prime, because it can be changed into another prime (1940221) 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, 970100 + 970101.

It is an arithmetic number, because the mean of its divisors is an integer number (970101).

2^1940201 is an apocalyptic number.

It is an amenable number.

1940201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940201 is an equidigital number, since it uses as much as digits as its factorization.

1940201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1940201 is about 1392.9109806445. The cubic root of 1940201 is about 124.7236776176.

Adding to 1940201 its reverse (1020491), we get a palindrome (2960692).

The spelling of 1940201 in words is "one million, nine hundred forty thousand, two hundred one".