7291423 has 2 divisors, whose sum is σ = 7291424. Its totient is φ = 7291422.

The previous prime is 7291411. The next prime is 7291429. The reversal of 7291423 is 3241927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7291423 - 2¹³ = 7283231 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7291391 and 7291400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7291429) 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, 3645711 + 3645712.

It is an arithmetic number, because the mean of its divisors is an integer number (3645712).

Almost surely, 2^7291423 is an apocalyptic number.

7291423 is a deficient number, since it is larger than the sum of its proper divisors (1).

7291423 is an equidigital number, since it uses as much as digits as its factorization.

7291423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 7291423 is about 2700.2635056601. The cubic root of 7291423 is about 193.9117375807.

The spelling of 7291423 in words is "seven million, two hundred ninety-one thousand, four hundred twenty-three".