75538042 has 4 divisors (see below), whose sum is σ = 113307066. Its totient is φ = 37769020.

The previous prime is 75538039. The next prime is 75538061. The reversal of 75538042 is 24083557.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24083557 = 139 ⋅173263.

It can be written as a sum of positive squares in only one way, i.e., 45846441 + 29691601 = 6771^2 + 5449^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75537989 and 75538007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18884509 + ... + 18884512.

Almost surely, 2^75538042 is an apocalyptic number.

75538042 is a deficient number, since it is larger than the sum of its proper divisors (37769024).

75538042 is a wasteful number, since it uses less digits than its factorization.

75538042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37769023.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 75538042 is about 8691.2623939218. The cubic root of 75538042 is about 422.7223800427.

The spelling of 75538042 in words is "seventy-five million, five hundred thirty-eight thousand, forty-two".