1404257 has 2 divisors, whose sum is σ = 1404258. Its totient is φ = 1404256.

The previous prime is 1404229. The next prime is 1404283. The reversal of 1404257 is 7524041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1401856 + 2401 = 1184^2 + 49^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1404257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1404287) 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 as a sum of consecutive naturals, namely, 702128 + 702129.

It is an arithmetic number, because the mean of its divisors is an integer number (702129).

2^1404257 is an apocalyptic number.

It is an amenable number.

1404257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404257 is an equidigital number, since it uses as much as digits as its factorization.

1404257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 1404257 is about 1185.0135020328. The cubic root of 1404257 is about 111.9821665909.

Adding to 1404257 its reverse (7524041), we get a palindrome (8928298).

It can be divided in two parts, 1404 and 257, that added together give a palindrome (1661).

The spelling of 1404257 in words is "one million, four hundred four thousand, two hundred fifty-seven".