42757505 has 32 divisors (see below), whose sum is σ = 62380800. Its totient is φ = 27482112.

The previous prime is 42757489. The next prime is 42757531. The reversal of 42757505 is 50575724.

It is a happy number.

It is not a de Polignac number, because 42757505 - 2⁴ = 42757489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74861 + ... + 75429.

It is an arithmetic number, because the mean of its divisors is an integer number (1949400).

Almost surely, 2^42757505 is an apocalyptic number.

It is an amenable number.

42757505 is a deficient number, since it is larger than the sum of its proper divisors (19623295).

42757505 is a wasteful number, since it uses less digits than its factorization.

42757505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713.

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 42757505 is about 6538.9223118187. The cubic root of 42757505 is about 349.6799932196.

The spelling of 42757505 in words is "forty-two million, seven hundred fifty-seven thousand, five hundred five".