1197145 has 4 divisors (see below), whose sum is σ = 1436580. Its totient is φ = 957712.

The previous prime is 1197121. The next prime is 1197167. The reversal of 1197145 is 5417911.

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

It can be written as a sum of positive squares in 2 ways, for example, as 219024 + 978121 = 468^2 + 989^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197145 - 2⁵ = 1197113 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119710 + ... + 119719.

It is an arithmetic number, because the mean of its divisors is an integer number (359145).

2^1197145 is an apocalyptic number.

It is an amenable number.

1197145 is a deficient number, since it is larger than the sum of its proper divisors (239435).

1197145 is an equidigital number, since it uses as much as digits as its factorization.

1197145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239434.

The product of its digits is 1260, while the sum is 28.

The square root of 1197145 is about 1094.1412157487. The cubic root of 1197145 is about 106.1815152670.

The spelling of 1197145 in words is "one million, one hundred ninety-seven thousand, one hundred forty-five".