42234289 has 4 divisors (see below), whose sum is σ = 42256240. Its totient is φ = 42212340.

The previous prime is 42234281. The next prime is 42234293. The reversal of 42234289 is 98243224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42234289 - 2³ = 42234281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42234281) 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, 7779 + ... + 12040.

It is an arithmetic number, because the mean of its divisors is an integer number (10564060).

Almost surely, 2^42234289 is an apocalyptic number.

It is an amenable number.

42234289 is a deficient number, since it is larger than the sum of its proper divisors (21951).

42234289 is a wasteful number, since it uses less digits than its factorization.

42234289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21950.

The product of its digits is 27648, while the sum is 34.

The square root of 42234289 is about 6498.7913491664. The cubic root of 42234289 is about 348.2478114464.

The spelling of 42234289 in words is "forty-two million, two hundred thirty-four thousand, two hundred eighty-nine".