1971122 has 8 divisors (see below), whose sum is σ = 2964972. Its totient is φ = 982800.

The previous prime is 1971119. The next prime is 1971127. The reversal of 1971122 is 2211791.

It can be written as a sum of positive squares in 2 ways, for example, as 1819801 + 151321 = 1349^2 + 389^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1971127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329 + ... + 2012.

2^1971122 is an apocalyptic number.

1971122 is a deficient number, since it is larger than the sum of its proper divisors (993850).

1971122 is a wasteful number, since it uses less digits than its factorization.

1971122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764.

The product of its digits is 252, while the sum is 23.

The square root of 1971122 is about 1403.9665238174. The cubic root of 1971122 is about 125.3827627451.

The spelling of 1971122 in words is "one million, nine hundred seventy-one thousand, one hundred twenty-two".