74487421 has 8 divisors (see below), whose sum is σ = 79090560. Its totient is φ = 69908928.

The previous prime is 74487403. The next prime is 74487463. The reversal of 74487421 is 12478447.

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 74487421 - 2⁷ = 74487293 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 (71487421) 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, 270 + ... + 12208.

It is an arithmetic number, because the mean of its divisors is an integer number (9886320).

Almost surely, 2^74487421 is an apocalyptic number.

It is an amenable number.

74487421 is a deficient number, since it is larger than the sum of its proper divisors (4603139).

74487421 is a wasteful number, since it uses less digits than its factorization.

74487421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12323.

The product of its digits is 50176, while the sum is 37.

The square root of 74487421 is about 8630.6095381497. The cubic root of 74487421 is about 420.7534114890.

The spelling of 74487421 in words is "seventy-four million, four hundred eighty-seven thousand, four hundred twenty-one".