75042131 has 8 divisors (see below), whose sum is σ = 79663680. Its totient is φ = 70443648.

The previous prime is 75042119. The next prime is 75042193. The reversal of 75042131 is 13124057.

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

It is a de Polignac number, because none of the positive numbers 2^k-75042131 is a prime.

It is a super-2 number, since 2×75042131² = 11262642850042322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75042097 and 75042106.

It is not an unprimeable number, because it can be changed into a prime (75002131) 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, 1190 + ... + 12308.

It is an arithmetic number, because the mean of its divisors is an integer number (9957960).

Almost surely, 2^75042131 is an apocalyptic number.

75042131 is a deficient number, since it is larger than the sum of its proper divisors (4621549).

75042131 is a wasteful number, since it uses less digits than its factorization.

75042131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11533.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 75042131 is about 8662.6861307564. The cubic root of 75042131 is about 421.7952837839.

Adding to 75042131 its reverse (13124057), we get a palindrome (88166188).

The spelling of 75042131 in words is "seventy-five million, forty-two thousand, one hundred thirty-one".