42488249 has 4 divisors (see below), whose sum is σ = 42670836. Its totient is φ = 42305664.

The previous prime is 42488239. The next prime is 42488267. The reversal of 42488249 is 94288424.

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 21949225 + 20539024 = 4685^2 + 4532^2 .

It is a cyclic number.

It is not a de Polignac number, because 42488249 - 2⁴ = 42488233 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 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, 90944 + ... + 91409.

It is an arithmetic number, because the mean of its divisors is an integer number (10667709).

Almost surely, 2^42488249 is an apocalyptic number.

It is an amenable number.

42488249 is a deficient number, since it is larger than the sum of its proper divisors (182587).

42488249 is a wasteful number, since it uses less digits than its factorization.

42488249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182586.

The product of its digits is 147456, while the sum is 41.

The square root of 42488249 is about 6518.3010823373. The cubic root of 42488249 is about 348.9444360548.

The spelling of 42488249 in words is "forty-two million, four hundred eighty-eight thousand, two hundred forty-nine".