72736141 has 2 divisors, whose sum is σ = 72736142. Its totient is φ = 72736140.

The previous prime is 72736127. The next prime is 72736159. The reversal of 72736141 is 14163727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72675625 + 60516 = 8525^2 + 246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72736141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72736121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36368070 + 36368071.

It is an arithmetic number, because the mean of its divisors is an integer number (36368071).

Almost surely, 2^72736141 is an apocalyptic number.

It is an amenable number.

72736141 is a deficient number, since it is larger than the sum of its proper divisors (1).

72736141 is an equidigital number, since it uses as much as digits as its factorization.

72736141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 72736141 is about 8528.5485869519. The cubic root of 72736141 is about 417.4297700603.

Adding to 72736141 its reverse (14163727), we get a palindrome (86899868).

The spelling of 72736141 in words is "seventy-two million, seven hundred thirty-six thousand, one hundred forty-one".