1254221 has 8 divisors (see below), whose sum is σ = 1320600. Its totient is φ = 1189440.

The previous prime is 1254217. The next prime is 1254241. The reversal of 1254221 is 1224521.

1254221 = T₇₈ + T₇₉ + ... + T₁₉₉.

It can be written as a sum of positive squares in 4 ways, for example, as 13225 + 1240996 = 115^2 + 1114^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1254221 - 2² = 1254217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1254221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1415 + ... + 2123.

It is an arithmetic number, because the mean of its divisors is an integer number (165075).

2^1254221 is an apocalyptic number.

It is an amenable number.

1254221 is a deficient number, since it is larger than the sum of its proper divisors (66379).

1254221 is an equidigital number, since it uses as much as digits as its factorization.

1254221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799.

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

The square root of 1254221 is about 1119.9200864347. The cubic root of 1254221 is about 107.8428498606.

Adding to 1254221 its reverse (1224521), we get a palindrome (2478742).

The spelling of 1254221 in words is "one million, two hundred fifty-four thousand, two hundred twenty-one".