42283889 has 4 divisors (see below), whose sum is σ = 42317220. Its totient is φ = 42250560.

The previous prime is 42283861. The next prime is 42283897. The reversal of 42283889 is 98838224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15864289 + 26419600 = 3983^2 + 5140^2 .

It is a cyclic number.

It is not a de Polignac number, because 42283889 - 2¹⁶ = 42218353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42283849) 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, 14684 + ... + 17325.

It is an arithmetic number, because the mean of its divisors is an integer number (10579305).

Almost surely, 2^42283889 is an apocalyptic number.

It is an amenable number.

42283889 is a deficient number, since it is larger than the sum of its proper divisors (33331).

42283889 is a wasteful number, since it uses less digits than its factorization.

42283889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33330.

The product of its digits is 221184, while the sum is 44.

The square root of 42283889 is about 6502.6063236213. The cubic root of 42283889 is about 348.3840856635.

The spelling of 42283889 in words is "forty-two million, two hundred eighty-three thousand, eight hundred eighty-nine".