1266100 has 36 divisors (see below), whose sum is σ = 2999808. Its totient is φ = 460000.

The previous prime is 1266091. The next prime is 1266101. The reversal of 1266100 is 16621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 525 + ... + 1675.

It is an arithmetic number, because the mean of its divisors is an integer number (83328).

2^1266100 is an apocalyptic number.

1266100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499904).

1266100 is an abundant number, since it is smaller than the sum of its proper divisors (1733708).

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

1266100 is a wasteful number, since it uses less digits than its factorization.

1266100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176 (or 1169 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1266100 is about 1125.2110913069. The cubic root of 1266100 is about 108.1822482987.

It can be divided in two parts, 126 and 6100, that added together give a palindrome (6226).

The spelling of 1266100 in words is "one million, two hundred sixty-six thousand, one hundred".