1421249 has 2 divisors, whose sum is σ = 1421250. Its totient is φ = 1421248.

The previous prime is 1421243. The next prime is 1421267. The reversal of 1421249 is 9421241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1311025 + 110224 = 1145^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421249 - 2¹⁶ = 1355713 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710624 + 710625.

It is an arithmetic number, because the mean of its divisors is an integer number (710625).

2^1421249 is an apocalyptic number.

It is an amenable number.

1421249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421249 is an equidigital number, since it uses as much as digits as its factorization.

1421249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 1421249 is about 1192.1614823504. The cubic root of 1421249 is about 112.4320313719.

The spelling of 1421249 in words is "one million, four hundred twenty-one thousand, two hundred forty-nine".