1240000100 has 18 divisors (see below), whose sum is σ = 2690800434. Its totient is φ = 496000000.

The previous prime is 1240000087. The next prime is 1240000117. The reversal of 1240000100 is 10000421.

It can be written as a sum of positive squares in 3 ways, for example, as 32993536 + 1207006564 = 5744^2 + 34742^2 .

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, 6199901 + ... + 6200100.

It is an arithmetic number, because the mean of its divisors is an integer number (149488913).

Almost surely, 2^1240000100 is an apocalyptic number.

1240000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240000100 is an abundant number, since it is smaller than the sum of its proper divisors (1450800334).

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

1240000100 is a wasteful number, since it uses less digits than its factorization.

1240000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12400015 (or 12400008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1240000100 is about 35213.6351432226. The cubic root of 1240000100 is about 1074.3370998690.

Adding to 1240000100 its reverse (10000421), we get a palindrome (1250000521).

The spelling of 1240000100 in words is "one billion, two hundred forty million, one hundred", and thus it is an aban number.