1266023 has 6 divisors (see below), whose sum is σ = 1391712. Its totient is φ = 1150820.

The previous prime is 1266019. The next prime is 1266043. The reversal of 1266023 is 3206621.

It is not a de Polignac number, because 1266023 - 2² = 1266019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1265986 and 1266004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266043) 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 in 5 ways as a sum of consecutive naturals, for example, 5111 + ... + 5352.

It is an arithmetic number, because the mean of its divisors is an integer number (231952).

2^1266023 is an apocalyptic number.

1266023 is a deficient number, since it is larger than the sum of its proper divisors (125689).

1266023 is a wasteful number, since it uses less digits than its factorization.

1266023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10485 (or 10474 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1266023 is about 1125.1768749846. The cubic root of 1266023 is about 108.1800551591.

The spelling of 1266023 in words is "one million, two hundred sixty-six thousand, twenty-three".