74146421 has 8 divisors (see below), whose sum is σ = 76532640. Its totient is φ = 71797968.

The previous prime is 74146381. The next prime is 74146433. The reversal of 74146421 is 12464147.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74146421 - 2⁶ = 74146357 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 (74146441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5426 + ... + 13331.

It is an arithmetic number, because the mean of its divisors is an integer number (9566580).

Almost surely, 2^74146421 is an apocalyptic number.

It is an amenable number.

74146421 is a deficient number, since it is larger than the sum of its proper divisors (2386219).

74146421 is a wasteful number, since it uses less digits than its factorization.

74146421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18883.

The product of its digits is 5376, while the sum is 29.

The square root of 74146421 is about 8610.8316090840. The cubic root of 74146421 is about 420.1103659317.

The spelling of 74146421 in words is "seventy-four million, one hundred forty-six thousand, four hundred twenty-one".