42074757 has 6 divisors (see below), whose sum is σ = 60774662. Its totient is φ = 28049832.

The previous prime is 42074743. The next prime is 42074761. The reversal of 42074757 is 75747024.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42068196 + 6561 = 6486^2 + 81^2 .

It is not a de Polignac number, because 42074757 - 2⁴ = 42074741 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 (42074707) 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 5 ways as a sum of consecutive naturals, for example, 2337478 + ... + 2337495.

Almost surely, 2^42074757 is an apocalyptic number.

It is an amenable number.

42074757 is a deficient number, since it is larger than the sum of its proper divisors (18699905).

42074757 is a wasteful number, since it uses less digits than its factorization.

42074757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674979 (or 4674976 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 42074757 is about 6486.5057619646. The cubic root of 42074757 is about 347.8087782191.

The spelling of 42074757 in words is "forty-two million, seventy-four thousand, seven hundred fifty-seven".