72415423 has 2 divisors, whose sum is σ = 72415424. Its totient is φ = 72415422.

The previous prime is 72415373. The next prime is 72415433. The reversal of 72415423 is 32451427.

It is a strong prime.

It is an emirp because it is prime and its reverse (32451427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72415423 - 2⁹ = 72414911 is a prime.

It is equal to p_4251781 and since 72415423 and 4251781 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 72415391 and 72415400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72415433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36207711 + 36207712.

It is an arithmetic number, because the mean of its divisors is an integer number (36207712).

Almost surely, 2^72415423 is an apocalyptic number.

72415423 is a deficient number, since it is larger than the sum of its proper divisors (1).

72415423 is an equidigital number, since it uses as much as digits as its factorization.

72415423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 28.

The square root of 72415423 is about 8509.7252012036. The cubic root of 72415423 is about 416.8153368847.

The spelling of 72415423 in words is "seventy-two million, four hundred fifteen thousand, four hundred twenty-three".