1209272 has 16 divisors (see below), whose sum is σ = 2300400. Its totient is φ = 595840.

The previous prime is 1209269. The next prime is 1209277. The reversal of 1209272 is 2729021.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209277) 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, 497 + ... + 1632.

It is an arithmetic number, because the mean of its divisors is an integer number (143775).

2^1209272 is an apocalyptic number.

It is an amenable number.

1209272 is a deficient number, since it is larger than the sum of its proper divisors (1091128).

1209272 is a wasteful number, since it uses less digits than its factorization.

1209272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206 (or 2202 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1209272 is about 1099.6690411210. The cubic root of 1209272 is about 106.5388486337.

The spelling of 1209272 in words is "one million, two hundred nine thousand, two hundred seventy-two".