101244520 has 96 divisors (see below), whose sum is σ = 261477720. Its totient is φ = 35143680.

The previous prime is 101244511. The next prime is 101244523. The reversal of 101244520 is 25442101.

It can be written as a sum of positive squares in 12 ways, for example, as 964324 + 100280196 = 982^2 + 10014^2 .

It is not an unprimeable number, because it can be changed into a prime (101244523) 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, 114480 + ... + 115360.

Almost surely, 2^101244520 is an apocalyptic number.

101244520 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 101244520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130738860).

101244520 is an abundant number, since it is smaller than the sum of its proper divisors (160233200).

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

101244520 is a wasteful number, since it uses less digits than its factorization.

101244520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 101244520 is about 10062.0335916752. The cubic root of 101244520 is about 466.0764670332.

Adding to 101244520 its reverse (25442101), we get a palindrome (126686621).

The spelling of 101244520 in words is "one hundred one million, two hundred forty-four thousand, five hundred twenty".