100144240 has 120 divisors (see below), whose sum is σ = 276076080. Its totient is φ = 33675264.

The previous prime is 100144217. The next prime is 100144243. The reversal of 100144240 is 42441001.

It is a super-3 number, since 3×100144240³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100144243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231064 + ... + 231496.

It is an arithmetic number, because the mean of its divisors is an integer number (2300634).

Almost surely, 2^100144240 is an apocalyptic number.

100144240 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 100144240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138038040).

100144240 is an abundant number, since it is smaller than the sum of its proper divisors (175931840).

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

100144240 is a wasteful number, since it uses less digits than its factorization.

100144240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 100144240 is about 10007.2094012267. The cubic root of 100144240 is about 464.3819437393.

Adding to 100144240 its reverse (42441001), we get a palindrome (142585241).

The spelling of 100144240 in words is "one hundred million, one hundred forty-four thousand, two hundred forty".