1401263 has 2 divisors, whose sum is σ = 1401264. Its totient is φ = 1401262.

The previous prime is 1401247. The next prime is 1401287. The reversal of 1401263 is 3621041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1401263 - 2⁴ = 1401247 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 (1401203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700631 + 700632.

It is an arithmetic number, because the mean of its divisors is an integer number (700632).

2^1401263 is an apocalyptic number.

1401263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401263 is an equidigital number, since it uses as much as digits as its factorization.

1401263 is an evil number, because the sum of its binary digits is even.

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

The square root of 1401263 is about 1183.7495512143. The cubic root of 1401263 is about 111.9025246716.

The spelling of 1401263 in words is "one million, four hundred one thousand, two hundred sixty-three".