74130421 has 8 divisors (see below), whose sum is σ = 80161920. Its totient is φ = 68284608.

The previous prime is 74130401. The next prime is 74130437. The reversal of 74130421 is 12403147.

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

It is not a de Polignac number, because 74130421 - 2²³ = 65741813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74130392 and 74130401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74130401) 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, 45591 + ... + 47188.

It is an arithmetic number, because the mean of its divisors is an integer number (10020240).

Almost surely, 2^74130421 is an apocalyptic number.

It is an amenable number.

74130421 is a deficient number, since it is larger than the sum of its proper divisors (6031499).

74130421 is a wasteful number, since it uses less digits than its factorization.

74130421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92843.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 74130421 is about 8609.9024965443. The cubic root of 74130421 is about 420.0801453253.

Adding to 74130421 its reverse (12403147), we get a palindrome (86533568).

The spelling of 74130421 in words is "seventy-four million, one hundred thirty thousand, four hundred twenty-one".