1263441 has 4 divisors (see below), whose sum is σ = 1684592. Its totient is φ = 842292.

The previous prime is 1263403. The next prime is 1263461. The reversal of 1263441 is 1443621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1443621 = 3 ⋅481207.

It is not a de Polignac number, because 1263441 - 2⁶ = 1263377 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1263461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210571 + ... + 210576.

It is an arithmetic number, because the mean of its divisors is an integer number (421148).

2^1263441 is an apocalyptic number.

It is an amenable number.

1263441 is a deficient number, since it is larger than the sum of its proper divisors (421151).

1263441 is an equidigital number, since it uses as much as digits as its factorization.

1263441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421150.

The product of its digits is 576, while the sum is 21.

The square root of 1263441 is about 1124.0289142188. The cubic root of 1263441 is about 108.1064622345.

The spelling of 1263441 in words is "one million, two hundred sixty-three thousand, four hundred forty-one".