75042487 has 4 divisors (see below), whose sum is σ = 80815000. Its totient is φ = 69269976.

The previous prime is 75042469. The next prime is 75042497. The reversal of 75042487 is 78424057.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75042487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75042427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2886237 + ... + 2886262.

It is an arithmetic number, because the mean of its divisors is an integer number (20203750).

Almost surely, 2^75042487 is an apocalyptic number.

75042487 is a deficient number, since it is larger than the sum of its proper divisors (5772513).

75042487 is a wasteful number, since it uses less digits than its factorization.

75042487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772512.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 75042487 is about 8662.7066786311. The cubic root of 75042487 is about 421.7959507821.

The spelling of 75042487 in words is "seventy-five million, forty-two thousand, four hundred eighty-seven".