42994571 has 4 divisors (see below), whose sum is σ = 43437912. Its totient is φ = 42551232.

The previous prime is 42994541. The next prime is 42994577. The reversal of 42994571 is 17549924.

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

It is a cyclic number.

It is not a de Polignac number, because 42994571 - 2¹⁸ = 42732427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42994577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221525 + ... + 221718.

It is an arithmetic number, because the mean of its divisors is an integer number (10859478).

Almost surely, 2^42994571 is an apocalyptic number.

42994571 is a deficient number, since it is larger than the sum of its proper divisors (443341).

42994571 is an equidigital number, since it uses as much as digits as its factorization.

42994571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443340.

The product of its digits is 90720, while the sum is 41.

The square root of 42994571 is about 6557.0245538659. The cubic root of 42994571 is about 350.3250612723.

The spelling of 42994571 in words is "forty-two million, nine hundred ninety-four thousand, five hundred seventy-one".