42445250 has 48 divisors (see below), whose sum is σ = 82249128. Its totient is φ = 16400000.

The previous prime is 42445223. The next prime is 42445279. The reversal of 42445250 is 5254424.

It can be written as a sum of positive squares in 12 ways, for example, as 9186961 + 33258289 = 3031^2 + 5767^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420200 + ... + 420300.

Almost surely, 2^42445250 is an apocalyptic number.

42445250 is a deficient number, since it is larger than the sum of its proper divisors (39803878).

42445250 is a wasteful number, since it uses less digits than its factorization.

42445250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 42445250 is about 6515.0019186490. The cubic root of 42445250 is about 348.8266832913.

Adding to 42445250 its reverse (5254424), we get a palindrome (47699674).

The spelling of 42445250 in words is "forty-two million, four hundred forty-five thousand, two hundred fifty".