74405423 has 2 divisors, whose sum is σ = 74405424. Its totient is φ = 74405422.

The previous prime is 74405417. The next prime is 74405477. The reversal of 74405423 is 32450447.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74405423 - 2⁴ = 74405407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74405623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37202711 + 37202712.

It is an arithmetic number, because the mean of its divisors is an integer number (37202712).

Almost surely, 2^74405423 is an apocalyptic number.

74405423 is a deficient number, since it is larger than the sum of its proper divisors (1).

74405423 is an equidigital number, since it uses as much as digits as its factorization.

74405423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 74405423 is about 8625.8578124149. The cubic root of 74405423 is about 420.5989621184.

The spelling of 74405423 in words is "seventy-four million, four hundred five thousand, four hundred twenty-three".