42681250 has 24 divisors (see below), whose sum is σ = 80033940. Its totient is φ = 17070000.

The previous prime is 42681229. The next prime is 42681253. The reversal of 42681250 is 5218624.

It can be written as a sum of positive squares in 6 ways, for example, as 4575321 + 38105929 = 2139^2 + 6173^2 .

It is not an unprimeable number, because it can be changed into a prime (42681253) 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 11 ways as a sum of consecutive naturals, for example, 2836 + ... + 9664.

Almost surely, 2^42681250 is an apocalyptic number.

42681250 is a deficient number, since it is larger than the sum of its proper divisors (37352690).

42681250 is an frugal number, since it uses more digits than its factorization.

42681250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6856 (or 6836 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 42681250 is about 6533.0888559700. The cubic root of 42681250 is about 349.4719929693.

Adding to 42681250 its reverse (5218624), we get a palindrome (47899874).

The spelling of 42681250 in words is "forty-two million, six hundred eighty-one thousand, two hundred fifty".