1221452 has 6 divisors (see below), whose sum is σ = 2137548. Its totient is φ = 610724.

The previous prime is 1221449. The next prime is 1221457. The reversal of 1221452 is 2541221.

It is a self number, because there is not a number n which added to its sum of digits gives 1221452.

It is not an unprimeable number, because it can be changed into a prime (1221457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152678 + ... + 152685.

It is an arithmetic number, because the mean of its divisors is an integer number (356258).

2^1221452 is an apocalyptic number.

It is an amenable number.

1221452 is a deficient number, since it is larger than the sum of its proper divisors (916096).

1221452 is a wasteful number, since it uses less digits than its factorization.

1221452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305367 (or 305365 counting only the distinct ones).

The product of its digits is 160, while the sum is 17.

The square root of 1221452 is about 1105.1931957807. The cubic root of 1221452 is about 106.8953470602.

Adding to 1221452 its reverse (2541221), we get a palindrome (3762673).

The spelling of 1221452 in words is "one million, two hundred twenty-one thousand, four hundred fifty-two".