10001240 has 16 divisors (see below), whose sum is σ = 22502880. Its totient is φ = 4000480.

The previous prime is 10001237. The next prime is 10001261. The reversal of 10001240 is 4210001.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 124976 + ... + 125055.

It is an arithmetic number, because the mean of its divisors is an integer number (1406430).

Almost surely, 2^10001240 is an apocalyptic number.

10001240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001240 is an abundant number, since it is smaller than the sum of its proper divisors (12501640).

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

10001240 is a wasteful number, since it uses less digits than its factorization.

10001240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250042 (or 250038 counting only the distinct ones).

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

The square root of 10001240 is about 3162.4737153058. The cubic root of 10001240 is about 215.4523736319.

Adding to 10001240 its reverse (4210001), we get a palindrome (14211241).

The spelling of 10001240 in words is "ten million, one thousand, two hundred forty".