72101241 has 12 divisors (see below), whose sum is σ = 104225940. Its totient is φ = 48030720.

The previous prime is 72101209. The next prime is 72101261. The reversal of 72101241 is 14210127.

It can be written as a sum of positive squares in 2 ways, for example, as 57699216 + 14402025 = 7596^2 + 3795^2 .

It is not a de Polignac number, because 72101241 - 2⁵ = 72101209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72101261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14881 + ... + 19121.

It is an arithmetic number, because the mean of its divisors is an integer number (8685495).

Almost surely, 2^72101241 is an apocalyptic number.

It is an amenable number.

72101241 is a deficient number, since it is larger than the sum of its proper divisors (32124699).

72101241 is a wasteful number, since it uses less digits than its factorization.

72101241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6136 (or 6133 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 72101241 is about 8491.2449617238. The cubic root of 72101241 is about 416.2116638124.

Adding to 72101241 its reverse (14210127), we get a palindrome (86311368).

The spelling of 72101241 in words is "seventy-two million, one hundred one thousand, two hundred forty-one".