75669442 has 4 divisors (see below), whose sum is σ = 113504166. Its totient is φ = 37834720.

The previous prime is 75669427. The next prime is 75669449. The reversal of 75669442 is 24496657.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 68211081 + 7458361 = 8259^2 + 2731^2 .

It is not an unprimeable number, because it can be changed into a prime (75669449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18917359 + ... + 18917362.

Almost surely, 2^75669442 is an apocalyptic number.

75669442 is a deficient number, since it is larger than the sum of its proper divisors (37834724).

75669442 is a wasteful number, since it uses less digits than its factorization.

75669442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37834723.

The product of its digits is 362880, while the sum is 43.

The square root of 75669442 is about 8698.8184255104. The cubic root of 75669442 is about 422.9673495208.

The spelling of 75669442 in words is "seventy-five million, six hundred sixty-nine thousand, four hundred forty-two".