42516477 has 6 divisors (see below), whose sum is σ = 61412702. Its totient is φ = 28344312.

The previous prime is 42516449. The next prime is 42516479. The reversal of 42516477 is 77461524.

42516477 is a `hidden beast` number, since 4 + 2 + 5 + 1 + 647 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38081241 + 4435236 = 6171^2 + 2106^2 .

It is not a de Polignac number, because 42516477 - 2⁶ = 42516413 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 (42516479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2362018 + ... + 2362035.

Almost surely, 2^42516477 is an apocalyptic number.

It is an amenable number.

42516477 is a deficient number, since it is larger than the sum of its proper divisors (18896225).

42516477 is a wasteful number, since it uses less digits than its factorization.

42516477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4724059 (or 4724056 counting only the distinct ones).

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

The square root of 42516477 is about 6520.4660109535. The cubic root of 42516477 is about 349.0216952438.

The spelling of 42516477 in words is "forty-two million, five hundred sixteen thousand, four hundred seventy-seven".