75143842 has 16 divisors (see below), whose sum is σ = 120022560. Its totient is φ = 35161408.

The previous prime is 75143839. The next prime is 75143851. The reversal of 75143842 is 24834157.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 75143798 and 75143807.

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, 88 + ... + 12259.

It is an arithmetic number, because the mean of its divisors is an integer number (7501410).

Almost surely, 2^75143842 is an apocalyptic number.

75143842 is a deficient number, since it is larger than the sum of its proper divisors (44878718).

75143842 is a wasteful number, since it uses less digits than its factorization.

75143842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12545.

The product of its digits is 26880, while the sum is 34.

The square root of 75143842 is about 8668.5547815077. The cubic root of 75143842 is about 421.9857627924.

Adding to 75143842 its reverse (24834157), we get a palindrome (99977999).

The spelling of 75143842 in words is "seventy-five million, one hundred forty-three thousand, eight hundred forty-two".