75742405 has 8 divisors (see below), whose sum is σ = 91013112. Its totient is φ = 60512448.

The previous prime is 75742369. The next prime is 75742421. The reversal of 75742405 is 50424757.

It can be written as a sum of positive squares in 4 ways, for example, as 196 + 75742209 = 14^2 + 8703^2 .

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 75742405 - 2⁹ = 75741893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 5934 + ... + 13663.

It is an arithmetic number, because the mean of its divisors is an integer number (11376639).

Almost surely, 2^75742405 is an apocalyptic number.

It is an amenable number.

75742405 is a deficient number, since it is larger than the sum of its proper divisors (15270707).

75742405 is a wasteful number, since it uses less digits than its factorization.

75742405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20375.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 75742405 is about 8703.0112604776. The cubic root of 75742405 is about 423.1032522584.

The spelling of 75742405 in words is "seventy-five million, seven hundred forty-two thousand, four hundred five".