1407281 has 2 divisors, whose sum is σ = 1407282. Its totient is φ = 1407280.

The previous prime is 1407271. The next prime is 1407293. The reversal of 1407281 is 1827041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 152881 = 1120^2 + 391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1407281 is a prime.

It is a super-2 number, since 2×1407281² = 3960879625922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1407251) 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, 703640 + 703641.

It is an arithmetic number, because the mean of its divisors is an integer number (703641).

2^1407281 is an apocalyptic number.

It is an amenable number.

1407281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1407281 is an equidigital number, since it uses as much as digits as its factorization.

1407281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1407281 is about 1186.2887506843. The cubic root of 1407281 is about 112.0624916987.

The spelling of 1407281 in words is "one million, four hundred seven thousand, two hundred eighty-one".