1266020 has 24 divisors (see below), whose sum is σ = 3038784. Its totient is φ = 434016.

The previous prime is 1266019. The next prime is 1266043. The reversal of 1266020 is 206621.

It is a self number, because there is not a number n which added to its sum of digits gives 1266020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4382 + ... + 4661.

It is an arithmetic number, because the mean of its divisors is an integer number (126616).

2^1266020 is an apocalyptic number.

1266020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266020 is an abundant number, since it is smaller than the sum of its proper divisors (1772764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266020 is a wasteful number, since it uses less digits than its factorization.

1266020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9059 (or 9057 counting only the distinct ones).

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

The square root of 1266020 is about 1125.1755418600. The cubic root of 1266020 is about 108.1799697103.

The spelling of 1266020 in words is "one million, two hundred sixty-six thousand, twenty".