72206423 has 2 divisors, whose sum is σ = 72206424. Its totient is φ = 72206422.

The previous prime is 72206413. The next prime is 72206437. The reversal of 72206423 is 32460227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72206423 - 2²⁴ = 55429207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72206392 and 72206401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72206413) 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 as a sum of consecutive naturals, namely, 36103211 + 36103212.

It is an arithmetic number, because the mean of its divisors is an integer number (36103212).

Almost surely, 2^72206423 is an apocalyptic number.

72206423 is a deficient number, since it is larger than the sum of its proper divisors (1).

72206423 is an equidigital number, since it uses as much as digits as its factorization.

72206423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 72206423 is about 8497.4362604258. The cubic root of 72206423 is about 416.4139566992.

The spelling of 72206423 in words is "seventy-two million, two hundred six thousand, four hundred twenty-three".