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72732342121 is a prime number
BaseRepresentation
bin100001110111100101…
…1110111011101101001
320221201211201210121221
41003233023313131221
52142423434421441
653225054302041
75153242464445
oct1035713673551
9227654653557
1072732342121
112893356915a
1212119ab7921
136b2154613a
14373d867825
151d5a4338d1
hex10ef2f7769

72732342121 has 2 divisors, whose sum is σ = 72732342122. Its totient is φ = 72732342120.

The previous prime is 72732342101. The next prime is 72732342143. The reversal of 72732342121 is 12124323727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72395436096 + 336906025 = 269064^2 + 18355^2 .

It is a cyclic number.

It is not a de Polignac number, because 72732342121 - 213 = 72732333929 is a prime.

It is not a weakly prime, because it can be changed into another prime (72732342101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36366171060 + 36366171061.

It is an arithmetic number, because the mean of its divisors is an integer number (36366171061).

Almost surely, 272732342121 is an apocalyptic number.

It is an amenable number.

72732342121 is a deficient number, since it is larger than the sum of its proper divisors (1).

72732342121 is an equidigital number, since it uses as much as digits as its factorization.

72732342121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 34.

Adding to 72732342121 its reverse (12124323727), we get a palindrome (84856665848).

The spelling of 72732342121 in words is "seventy-two billion, seven hundred thirty-two million, three hundred forty-two thousand, one hundred twenty-one".