42771148 has 12 divisors (see below), whose sum is σ = 85542352. Its totient is φ = 18330480.

The previous prime is 42771139. The next prime is 42771151. The reversal of 42771148 is 84117724.

42771148 is an admirable number.

It is a super-2 number, since 2×42771148² = 3658742202475808, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 763743 + ... + 763798.

Almost surely, 2^42771148 is an apocalyptic number.

It is an amenable number.

42771148 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42771148 is a wasteful number, since it uses less digits than its factorization.

42771148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527552 (or 1527550 counting only the distinct ones).

The product of its digits is 12544, while the sum is 34.

The square root of 42771148 is about 6539.9654433338. The cubic root of 42771148 is about 349.7171810523.

The spelling of 42771148 in words is "forty-two million, seven hundred seventy-one thousand, one hundred forty-eight".