42741225 has 18 divisors (see below), whose sum is σ = 76554686. Its totient is φ = 22795200.

The previous prime is 42741221. The next prime is 42741227. The reversal of 42741225 is 52214724.

42741225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5433561 + 37307664 = 2331^2 + 6108^2 .

It is not a de Polignac number, because 42741225 - 2² = 42741221 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 (42741221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 94756 + ... + 95205.

Almost surely, 2^42741225 is an apocalyptic number.

42741225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42741225 is a deficient number, since it is larger than the sum of its proper divisors (33813461).

42741225 is a wasteful number, since it uses less digits than its factorization.

42741225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189977 (or 189969 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 42741225 is about 6537.6773398509. The cubic root of 42741225 is about 349.6356071486.

Adding to 42741225 its reverse (52214724), we get a palindrome (94955949).

The spelling of 42741225 in words is "forty-two million, seven hundred forty-one thousand, two hundred twenty-five".