42534450 has 144 divisors (see below), whose sum is σ = 136553760. Its totient is φ = 9707040.

The previous prime is 42534419. The next prime is 42534451. The reversal of 42534450 is 5443524.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42534451) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 65829 + ... + 66471.

It is an arithmetic number, because the mean of its divisors is an integer number (948290).

Almost surely, 2^42534450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42534450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68276880).

42534450 is an abundant number, since it is smaller than the sum of its proper divisors (94019310).

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

42534450 is a wasteful number, since it uses less digits than its factorization.

42534450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 42534450 is about 6521.8440643732. The cubic root of 42534450 is about 349.0708689890.

Adding to 42534450 its reverse (5443524), we get a palindrome (47977974).

The spelling of 42534450 in words is "forty-two million, five hundred thirty-four thousand, four hundred fifty".