75142 has 4 divisors (see below), whose sum is σ = 112716. Its totient is φ = 37570.

The previous prime is 75133. The next prime is 75149. The reversal of 75142 is 24157.

75142 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes.

75142 is an undulating number in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75149) by changing a digit.

75142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18784 + ... + 18787.

It is an arithmetic number, because the mean of its divisors is an integer number (28179).

2⁷⁵¹⁴² is an apocalyptic number.

75142 is a deficient number, since it is larger than the sum of its proper divisors (37574).

75142 is a wasteful number, since it uses less digits than its factorization.

75142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37573.

The product of its digits is 280, while the sum is 19.

The square root of 75142 is about 274.1204114983. The cubic root of 75142 is about 42.1982314720.

Adding to 75142 its reverse (24157), we get a palindrome (99299).

The spelling of 75142 in words is "seventy-five thousand, one hundred forty-two".