42245250 has 128 divisors (see below), whose sum is σ = 115015680. Its totient is φ = 10296000.

The previous prime is 42245249. The next prime is 42245251. The reversal of 42245250 is 5254224.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42245249) and next prime (42245251).

It is a super-2 number, since 2×42245250² = 3569322295125000, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42245250.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42245251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 534711 + ... + 534789.

It is an arithmetic number, because the mean of its divisors is an integer number (898560).

Almost surely, 2^42245250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42245250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57507840).

42245250 is an abundant number, since it is smaller than the sum of its proper divisors (72770430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42245250 is a wasteful number, since it uses less digits than its factorization.

42245250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 42245250 is about 6499.6346051144. The cubic root of 42245250 is about 348.2779355800.

Adding to 42245250 its reverse (5254224), we get a palindrome (47499474).

The spelling of 42245250 in words is "forty-two million, two hundred forty-five thousand, two hundred fifty".