40571842 has 4 divisors (see below), whose sum is σ = 60857766. Its totient is φ = 20285920.

The previous prime is 40571831. The next prime is 40571849. The reversal of 40571842 is 24817504.

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

It can be written as a sum of positive squares in only one way, i.e., 35414401 + 5157441 = 5951^2 + 2271^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (40571849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10142959 + ... + 10142962.

Almost surely, 2^40571842 is an apocalyptic number.

40571842 is a deficient number, since it is larger than the sum of its proper divisors (20285924).

40571842 is a wasteful number, since it uses less digits than its factorization.

40571842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20285923.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 40571842 is about 6369.6029703585. The cubic root of 40571842 is about 343.6172109918.

The spelling of 40571842 in words is "forty million, five hundred seventy-one thousand, eight hundred forty-two".