75405542 has 8 divisors (see below), whose sum is σ = 113529600. Its totient is φ = 37562344.

The previous prime is 75405521. The next prime is 75405559. The reversal of 75405542 is 24550457.

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

It is a junction number, because it is equal to n+sod(n) for n = 75405499 and 75405508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69542 + ... + 70617.

It is an arithmetic number, because the mean of its divisors is an integer number (14191200).

Almost surely, 2^75405542 is an apocalyptic number.

75405542 is a deficient number, since it is larger than the sum of its proper divisors (38124058).

75405542 is a wasteful number, since it uses less digits than its factorization.

75405542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140430.

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 75405542 is about 8683.6364502436. The cubic root of 75405542 is about 422.4750719977.

Adding to 75405542 its reverse (24550457), we get a palindrome (99955999).

The spelling of 75405542 in words is "seventy-five million, four hundred five thousand, five hundred forty-two".