75995421 has 8 divisors (see below), whose sum is σ = 106660320. Its totient is φ = 47997072.

The previous prime is 75995419. The next prime is 75995441. The reversal of 75995421 is 12459957.

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

It is not a de Polignac number, because 75995421 - 2¹ = 75995419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75995411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666570 + ... + 666683.

It is an arithmetic number, because the mean of its divisors is an integer number (13332540).

Almost surely, 2^75995421 is an apocalyptic number.

It is an amenable number.

75995421 is a deficient number, since it is larger than the sum of its proper divisors (30664899).

75995421 is a wasteful number, since it uses less digits than its factorization.

75995421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333275.

The product of its digits is 113400, while the sum is 42.

The square root of 75995421 is about 8717.5352594641. The cubic root of 75995421 is about 423.5738513089.

The spelling of 75995421 in words is "seventy-five million, nine hundred ninety-five thousand, four hundred twenty-one".