1971202 has 4 divisors (see below), whose sum is σ = 2956806. Its totient is φ = 985600.

The previous prime is 1971199. The next prime is 1971209. The reversal of 1971202 is 2021791.

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

It can be written as a sum of positive squares in only one way, i.e., 1229881 + 741321 = 1109^2 + 861^2 .

It is not an unprimeable number, because it can be changed into a prime (1971209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492799 + ... + 492802.

2^1971202 is an apocalyptic number.

1971202 is a deficient number, since it is larger than the sum of its proper divisors (985604).

1971202 is an equidigital number, since it uses as much as digits as its factorization.

1971202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985603.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1971202 is about 1403.9950142362. The cubic root of 1971202 is about 125.3844589847.

Adding to 1971202 its reverse (2021791), we get a palindrome (3992993).

The spelling of 1971202 in words is "one million, nine hundred seventy-one thousand, two hundred two".