58128421 has 8 divisors (see below), whose sum is σ = 62705664. Its totient is φ = 53566320.

The previous prime is 58128419. The next prime is 58128431. The reversal of 58128421 is 12482185.

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 58128421 - 2¹ = 58128419 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 (58128401) 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, 4956 + ... + 11866.

It is an arithmetic number, because the mean of its divisors is an integer number (7838208).

Almost surely, 2^58128421 is an apocalyptic number.

It is an amenable number.

58128421 is a deficient number, since it is larger than the sum of its proper divisors (4577243).

58128421 is a wasteful number, since it uses less digits than its factorization.

58128421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7571.

The product of its digits is 5120, while the sum is 31.

The square root of 58128421 is about 7624.1996957058. The cubic root of 58128421 is about 387.3731441851.

The spelling of 58128421 in words is "fifty-eight million, one hundred twenty-eight thousand, four hundred twenty-one".