42075457 has 8 divisors (see below), whose sum is σ = 43281216. Its totient is φ = 40880112.

The previous prime is 42075413. The next prime is 42075499. The reversal of 42075457 is 75457024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42075457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42075757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5988 + ... + 10954.

It is an arithmetic number, because the mean of its divisors is an integer number (5410152).

Almost surely, 2^42075457 is an apocalyptic number.

It is an amenable number.

42075457 is a deficient number, since it is larger than the sum of its proper divisors (1205759).

42075457 is a wasteful number, since it uses less digits than its factorization.

42075457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5207.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 42075457 is about 6486.5597199132. The cubic root of 42075457 is about 347.8107070462.

The spelling of 42075457 in words is "forty-two million, seventy-five thousand, four hundred fifty-seven".