42204791 has 4 divisors (see below), whose sum is σ = 42250584. Its totient is φ = 42159000.

The previous prime is 42204787. The next prime is 42204803. The reversal of 42204791 is 19740224.

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 42204791 - 2² = 42204787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42204781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21485 + ... + 23366.

It is an arithmetic number, because the mean of its divisors is an integer number (10562646).

Almost surely, 2^42204791 is an apocalyptic number.

42204791 is a deficient number, since it is larger than the sum of its proper divisors (45793).

42204791 is an equidigital number, since it uses as much as digits as its factorization.

42204791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45792.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 42204791 is about 6496.5214538243. The cubic root of 42204791 is about 348.1667161507.

The spelling of 42204791 in words is "forty-two million, two hundred four thousand, seven hundred ninety-one".