42830757 has 6 divisors (see below), whose sum is σ = 61866662. Its totient is φ = 28553832.

The previous prime is 42830717. The next prime is 42830789. The reversal of 42830757 is 75703824.

42830757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 26718561 + 16112196 = 5169^2 + 4014^2 .

It is not a de Polignac number, because 42830757 - 2⁷ = 42830629 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 (42830707) 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 5 ways as a sum of consecutive naturals, for example, 2379478 + ... + 2379495.

Almost surely, 2^42830757 is an apocalyptic number.

It is an amenable number.

42830757 is a deficient number, since it is larger than the sum of its proper divisors (19035905).

42830757 is a wasteful number, since it uses less digits than its factorization.

42830757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4758979 (or 4758976 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 42830757 is about 6544.5211436743. The cubic root of 42830757 is about 349.8795694505.

The spelling of 42830757 in words is "forty-two million, eight hundred thirty thousand, seven hundred fifty-seven".