42550144 has 96 divisors (see below), whose sum is σ = 105276240. Its totient is φ = 16773120.

The previous prime is 42550141. The next prime is 42550147. The reversal of 42550144 is 44105524.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42550141) and next prime (42550147).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42550141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151284 + ... + 151564.

Almost surely, 2^42550144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42550144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52638120).

42550144 is an abundant number, since it is smaller than the sum of its proper divisors (62726096).

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

42550144 is a wasteful number, since it uses less digits than its factorization.

42550144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 42550144 is about 6523.0471407158. The cubic root of 42550144 is about 349.1137961110.

Adding to 42550144 its reverse (44105524), we get a palindrome (86655668).

The spelling of 42550144 in words is "forty-two million, five hundred fifty thousand, one hundred forty-four".