1424257 has 2 divisors, whose sum is σ = 1424258. Its totient is φ = 1424256.

The previous prime is 1424237. The next prime is 1424261. The reversal of 1424257 is 7524241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1418481 + 5776 = 1191^2 + 76^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1424257 is a prime.

It is an Ulam number.

1424257 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1424237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712128 + 712129.

It is an arithmetic number, because the mean of its divisors is an integer number (712129).

2^1424257 is an apocalyptic number.

It is an amenable number.

1424257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1424257 is an equidigital number, since it uses as much as digits as its factorization.

1424257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 25.

The square root of 1424257 is about 1193.4223896006. The cubic root of 1424257 is about 112.5112943393.

Adding to 1424257 its reverse (7524241), we get a palindrome (8948498).

It can be divided in two parts, 1424 and 257, that added together give a square (1681 = 41²).

The spelling of 1424257 in words is "one million, four hundred twenty-four thousand, two hundred fifty-seven".