72680123 has 2 divisors, whose sum is σ = 72680124. Its totient is φ = 72680122.

The previous prime is 72680051. The next prime is 72680129. The reversal of 72680123 is 32108627.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72680123 is a prime.

It is equal to p_4266344 and since 72680123 and 4266344 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (72680129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36340061 + 36340062.

It is an arithmetic number, because the mean of its divisors is an integer number (36340062).

Almost surely, 2^72680123 is an apocalyptic number.

72680123 is a deficient number, since it is larger than the sum of its proper divisors (1).

72680123 is an equidigital number, since it uses as much as digits as its factorization.

72680123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 72680123 is about 8525.2638082349. The cubic root of 72680123 is about 417.3225808597.

The spelling of 72680123 in words is "seventy-two million, six hundred eighty thousand, one hundred twenty-three".