1265100 has 36 divisors (see below), whose sum is σ = 3661224. Its totient is φ = 337280.

The previous prime is 1265093. The next prime is 1265101. The reversal of 1265100 is 15621.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1265100.

It is not an unprimeable number, because it can be changed into a prime (1265101) 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 11 ways as a sum of consecutive naturals, for example, 1809 + ... + 2408.

2^1265100 is an apocalyptic number.

1265100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1265100 is an abundant number, since it is smaller than the sum of its proper divisors (2396124).

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

1265100 is a wasteful number, since it uses less digits than its factorization.

1265100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234 (or 4227 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1265100 is about 1124.7666424641. The cubic root of 1265100 is about 108.1537590423.

The spelling of 1265100 in words is "one million, two hundred sixty-five thousand, one hundred".