75665142 has 24 divisors (see below), whose sum is σ = 187361616. Its totient is φ = 21618576.

The previous prime is 75665137. The next prime is 75665143. The reversal of 75665142 is 24156657.

It is a happy number.

75665142 is a `hidden beast` number, since 7 + 566 + 51 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 75665097 and 75665106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75665143) 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 11 ways as a sum of consecutive naturals, for example, 300133 + ... + 300384.

It is an arithmetic number, because the mean of its divisors is an integer number (7806734).

Almost surely, 2^75665142 is an apocalyptic number.

75665142 is an abundant number, since it is smaller than the sum of its proper divisors (111696474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75665142 is a wasteful number, since it uses less digits than its factorization.

75665142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600532 (or 600529 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 75665142 is about 8698.5712619947. The cubic root of 75665142 is about 422.9593375060.

The spelling of 75665142 in words is "seventy-five million, six hundred sixty-five thousand, one hundred forty-two".