42571877 has 4 divisors (see below), whose sum is σ = 42608076. Its totient is φ = 42535680.

The previous prime is 42571861. The next prime is 42571889. The reversal of 42571877 is 77817524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19088161 + 23483716 = 4369^2 + 4846^2 .

It is a cyclic number.

It is not a de Polignac number, because 42571877 - 2⁴ = 42571861 is a prime.

It is a super-2 number, since 2×42571877² = 3624729422606258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42571577) by changing a digit.

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, 16274 + ... + 18707.

It is an arithmetic number, because the mean of its divisors is an integer number (10652019).

Almost surely, 2^42571877 is an apocalyptic number.

It is an amenable number.

42571877 is a deficient number, since it is larger than the sum of its proper divisors (36199).

42571877 is a wasteful number, since it uses less digits than its factorization.

42571877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36198.

The product of its digits is 109760, while the sum is 41.

The square root of 42571877 is about 6524.7127906139. The cubic root of 42571877 is about 349.1732240237.

The spelling of 42571877 in words is "forty-two million, five hundred seventy-one thousand, eight hundred seventy-seven".