10101240 has 128 divisors (see below), whose sum is σ = 34560000. Its totient is φ = 2623104.

The previous prime is 10101239. The next prime is 10101277. The reversal of 10101240 is 4210101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

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 31 ways as a sum of consecutive naturals, for example, 50661 + ... + 50859.

It is an arithmetic number, because the mean of its divisors is an integer number (270000).

Almost surely, 2^10101240 is an apocalyptic number.

10101240 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 10101240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17280000).

10101240 is an abundant number, since it is smaller than the sum of its proper divisors (24458760).

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

10101240 is a wasteful number, since it uses less digits than its factorization.

10101240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 10101240 is about 3178.2447986271. The cubic root of 10101240 is about 216.1680790530.

Adding to 10101240 its reverse (4210101), we get a palindrome (14311341).

The spelling of 10101240 in words is "ten million, one hundred one thousand, two hundred forty".