74242423 has 2 divisors, whose sum is σ = 74242424. Its totient is φ = 74242422.

The previous prime is 74242409. The next prime is 74242433. The reversal of 74242423 is 32424247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74242423 - 2²⁵ = 40687991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74242391 and 74242400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74242403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37121211 + 37121212.

It is an arithmetic number, because the mean of its divisors is an integer number (37121212).

Almost surely, 2^74242423 is an apocalyptic number.

74242423 is a deficient number, since it is larger than the sum of its proper divisors (1).

74242423 is an equidigital number, since it uses as much as digits as its factorization.

74242423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 28.

The square root of 74242423 is about 8616.4042964568. The cubic root of 74242423 is about 420.2916021072.

The spelling of 74242423 in words is "seventy-four million, two hundred forty-two thousand, four hundred twenty-three".