72842923 has 2 divisors, whose sum is σ = 72842924. Its totient is φ = 72842922.

The previous prime is 72842911. The next prime is 72842969. The reversal of 72842923 is 32924827.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72842923 is a prime.

It is not a weakly prime, because it can be changed into another prime (72842123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36421461 + 36421462.

It is an arithmetic number, because the mean of its divisors is an integer number (36421462).

Almost surely, 2^72842923 is an apocalyptic number.

72842923 is a deficient number, since it is larger than the sum of its proper divisors (1).

72842923 is an equidigital number, since it uses as much as digits as its factorization.

72842923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 72842923 is about 8534.8065590264. The cubic root of 72842923 is about 417.6339427051.

The spelling of 72842923 in words is "seventy-two million, eight hundred forty-two thousand, nine hundred twenty-three".