42204591 has 64 divisors (see below), whose sum is σ = 77898240. Its totient is φ = 22187520.

The previous prime is 42204571. The next prime is 42204611. The reversal of 42204591 is 19540224.

It is an interprime number because it is at equal distance from previous prime (42204571) and next prime (42204611).

It is not a de Polignac number, because 42204591 - 2⁶ = 42204527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42204511) 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 63 ways as a sum of consecutive naturals, for example, 65316 + ... + 65958.

It is an arithmetic number, because the mean of its divisors is an integer number (1217160).

Almost surely, 2^42204591 is an apocalyptic number.

42204591 is a deficient number, since it is larger than the sum of its proper divisors (35693649).

42204591 is a wasteful number, since it uses less digits than its factorization.

42204591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 42204591 is about 6496.5060609531. The cubic root of 42204591 is about 348.1661661859.

The spelling of 42204591 in words is "forty-two million, two hundred four thousand, five hundred ninety-one".