42771487 has 8 divisors (see below), whose sum is σ = 47798352. Its totient is φ = 37934400.

The previous prime is 42771481. The next prime is 42771497. The reversal of 42771487 is 78417724.

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

It is a cyclic number.

It is not a de Polignac number, because 42771487 - 2⁷ = 42771359 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42771481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46968 + ... + 47869.

It is an arithmetic number, because the mean of its divisors is an integer number (5974794).

Almost surely, 2^42771487 is an apocalyptic number.

42771487 is a deficient number, since it is larger than the sum of its proper divisors (5026865).

42771487 is a wasteful number, since it uses less digits than its factorization.

42771487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94889.

The product of its digits is 87808, while the sum is 40.

The square root of 42771487 is about 6539.9913608506. The cubic root of 42771487 is about 349.7181049915.

The spelling of 42771487 in words is "forty-two million, seven hundred seventy-one thousand, four hundred eighty-seven".