1403261 has 2 divisors, whose sum is σ = 1403262. Its totient is φ = 1403260.

The previous prime is 1403257. The next prime is 1403287. The reversal of 1403261 is 1623041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1020100 + 383161 = 1010^2 + 619^2 .

It is a cyclic number.

It is not a de Polignac number, because 1403261 - 2² = 1403257 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1403251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701630 + 701631.

It is an arithmetic number, because the mean of its divisors is an integer number (701631).

2^1403261 is an apocalyptic number.

It is an amenable number.

1403261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1403261 is an equidigital number, since it uses as much as digits as its factorization.

1403261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1403261 is about 1184.5931791126. The cubic root of 1403261 is about 111.9556850618.

The spelling of 1403261 in words is "one million, four hundred three thousand, two hundred sixty-one".