1072191 has 16 divisors (see below), whose sum is σ = 1532160. Its totient is φ = 665280.

The previous prime is 1072187. The next prime is 1072199. The reversal of 1072191 is 1912701.

It is not a de Polignac number, because 1072191 - 2² = 1072187 is a prime.

It is a super-2 number, since 2×1072191² = 2299187080962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072199) 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 15 ways as a sum of consecutive naturals, for example, 2640 + ... + 3018.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^1072191 is an apocalyptic number.

1072191 is a deficient number, since it is larger than the sum of its proper divisors (459969).

1072191 is a wasteful number, since it uses less digits than its factorization.

1072191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446.

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 1072191 is about 1035.4665615074. The cubic root of 1072191 is about 102.3506768790.

Adding to 1072191 its reverse (1912701), we get a palindrome (2984892).

The spelling of 1072191 in words is "one million, seventy-two thousand, one hundred ninety-one".