42550450 has 12 divisors (see below), whose sum is σ = 79143930. Its totient is φ = 17020160.

The previous prime is 42550447. The next prime is 42550451. The reversal of 42550450 is 5405524.

It can be written as a sum of positive squares in 3 ways, for example, as 24000201 + 18550249 = 4899^2 + 4307^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (42550451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425455 + ... + 425554.

Almost surely, 2^42550450 is an apocalyptic number.

42550450 is a deficient number, since it is larger than the sum of its proper divisors (36593480).

42550450 is a wasteful number, since it uses less digits than its factorization.

42550450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851021 (or 851016 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 42550450 is about 6523.0705959694. The cubic root of 42550450 is about 349.1146329947.

Adding to 42550450 its reverse (5405524), we get a palindrome (47955974).

The spelling of 42550450 in words is "forty-two million, five hundred fifty thousand, four hundred fifty".