1260100 has 18 divisors (see below), whose sum is σ = 2734634. Its totient is φ = 504000.

The previous prime is 1260067. The next prime is 1260113. The reversal of 1260100 is 10621.

It can be written as a sum of positive squares in 3 ways, for example, as 36864 + 1223236 = 192^2 + 1106^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6201 + ... + 6400.

2^1260100 is an apocalyptic number.

1260100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1260100 is an abundant number, since it is smaller than the sum of its proper divisors (1474534).

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

1260100 is a wasteful number, since it uses less digits than its factorization.

1260100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12615 (or 12608 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1260100 is about 1122.5417586887. The cubic root of 1260100 is about 108.0110871105.

Adding to 1260100 its reverse (10621), we get a palindrome (1270721).

The spelling of 1260100 in words is "one million, two hundred sixty thousand, one hundred".