42488289 has 6 divisors (see below), whose sum is σ = 61371986. Its totient is φ = 28325520.

The previous prime is 42488279. The next prime is 42488297. The reversal of 42488289 is 98288424.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42146064 + 342225 = 6492^2 + 585^2 .

It is not a de Polignac number, because 42488289 - 2⁴ = 42488273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42488239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2360452 + ... + 2360469.

Almost surely, 2^42488289 is an apocalyptic number.

It is an amenable number.

42488289 is a deficient number, since it is larger than the sum of its proper divisors (18883697).

42488289 is a wasteful number, since it uses less digits than its factorization.

42488289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720927 (or 4720924 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 42488289 is about 6518.3041506208. The cubic root of 42488289 is about 348.9445455578.

The spelling of 42488289 in words is "forty-two million, four hundred eighty-eight thousand, two hundred eighty-nine".