74378423 has 6 divisors (see below), whose sum is σ = 86521896. Its totient is φ = 63752892.

The previous prime is 74378419. The next prime is 74378441. The reversal of 74378423 is 32487347.

It is not a de Polignac number, because 74378423 - 2² = 74378419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74378413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 758915 + ... + 759012.

It is an arithmetic number, because the mean of its divisors is an integer number (14420316).

Almost surely, 2^74378423 is an apocalyptic number.

74378423 is a deficient number, since it is larger than the sum of its proper divisors (12143473).

74378423 is a wasteful number, since it uses less digits than its factorization.

74378423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517941 (or 1517934 counting only the distinct ones).

The product of its digits is 112896, while the sum is 38.

The square root of 74378423 is about 8624.2926086723. The cubic root of 74378423 is about 420.5480807649.

The spelling of 74378423 in words is "seventy-four million, three hundred seventy-eight thousand, four hundred twenty-three".