42551443 has 8 divisors (see below), whose sum is σ = 47674800. Its totient is φ = 37637280.

The previous prime is 42551441. The next prime is 42551447. The reversal of 42551443 is 34415524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42551443 - 2¹ = 42551441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42551441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51868 + ... + 52681.

It is an arithmetic number, because the mean of its divisors is an integer number (5959350).

Almost surely, 2^42551443 is an apocalyptic number.

42551443 is a deficient number, since it is larger than the sum of its proper divisors (5123357).

42551443 is a wasteful number, since it uses less digits than its factorization.

42551443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104597.

The product of its digits is 9600, while the sum is 28.

The square root of 42551443 is about 6523.1467099859. The cubic root of 42551443 is about 349.1173487367.

Adding to 42551443 its reverse (34415524), we get a palindrome (76966967).

The spelling of 42551443 in words is "forty-two million, five hundred fifty-one thousand, four hundred forty-three".