101201540 has 48 divisors (see below), whose sum is σ = 233271360. Its totient is φ = 36574080.

The previous prime is 101201537. The next prime is 101201593. The reversal of 101201540 is 45102101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36731 + ... + 39389.

It is an arithmetic number, because the mean of its divisors is an integer number (4859820).

Almost surely, 2^101201540 is an apocalyptic number.

101201540 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 101201540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116635680).

101201540 is an abundant number, since it is smaller than the sum of its proper divisors (132069820).

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

101201540 is a wasteful number, since it uses less digits than its factorization.

101201540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852 (or 2850 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 101201540 is about 10059.8976137931. The cubic root of 101201540 is about 466.0105052677.

Adding to 101201540 its reverse (45102101), we get a palindrome (146303641).

The spelling of 101201540 in words is "one hundred one million, two hundred one thousand, five hundred forty".