42446430 has 160 divisors (see below), whose sum is σ = 128066400. Its totient is φ = 10015488.

The previous prime is 42446413. The next prime is 42446441. The reversal of 42446430 is 3464424.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42446394 and 42446403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 305301 + ... + 305439.

It is an arithmetic number, because the mean of its divisors is an integer number (800415).

Almost surely, 2^42446430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42446430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64033200).

42446430 is an abundant number, since it is smaller than the sum of its proper divisors (85619970).

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

42446430 is a wasteful number, since it uses less digits than its factorization.

42446430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 42446430 is about 6515.0924782385. The cubic root of 42446430 is about 348.8299157824.

The spelling of 42446430 in words is "forty-two million, four hundred forty-six thousand, four hundred thirty".