1191272 has 16 divisors (see below), whose sum is σ = 2286240. Its totient is φ = 581616.

The previous prime is 1191247. The next prime is 1191277. The reversal of 1191272 is 2721911.

1191272 = T₃₀₃ + T₃₀₄ + ... + T₃₂₆.

It is not an unprimeable number, because it can be changed into a prime (1191277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388 + ... + 2075.

It is an arithmetic number, because the mean of its divisors is an integer number (142890).

2^1191272 is an apocalyptic number.

It is an amenable number.

1191272 is a deficient number, since it is larger than the sum of its proper divisors (1094968).

1191272 is a wasteful number, since it uses less digits than its factorization.

1191272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512 (or 3508 counting only the distinct ones).

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

The square root of 1191272 is about 1091.4540759922. The cubic root of 1191272 is about 106.0075940922.

The spelling of 1191272 in words is "one million, one hundred ninety-one thousand, two hundred seventy-two".