42945450 has 48 divisors (see below), whose sum is σ = 109118016. Its totient is φ = 11171200.

The previous prime is 42945443. The next prime is 42945467. The reversal of 42945450 is 5454924.

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, 2659 + ... + 9641.

It is an arithmetic number, because the mean of its divisors is an integer number (2273292).

Almost surely, 2^42945450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42945450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54559008).

42945450 is an abundant number, since it is smaller than the sum of its proper divisors (66172566).

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

42945450 is a wasteful number, since it uses less digits than its factorization.

42945450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7039 (or 7034 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 42945450 is about 6553.2778058007. The cubic root of 42945450 is about 350.1915957784.

The spelling of 42945450 in words is "forty-two million, nine hundred forty-five thousand, four hundred fifty".