42550430 has 16 divisors (see below), whose sum is σ = 82482624. Its totient is φ = 15710880.

The previous prime is 42550421. The next prime is 42550447. The reversal of 42550430 is 3405524.

It is a junction number, because it is equal to n+sod(n) for n = 42550396 and 42550405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163526 + ... + 163785.

It is an arithmetic number, because the mean of its divisors is an integer number (5155164).

Almost surely, 2^42550430 is an apocalyptic number.

42550430 is a deficient number, since it is larger than the sum of its proper divisors (39932194).

42550430 is a wasteful number, since it uses less digits than its factorization.

42550430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327331.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 42550430 is about 6523.0690629488. The cubic root of 42550430 is about 349.1145782965.

Adding to 42550430 its reverse (3405524), we get a palindrome (45955954).

The spelling of 42550430 in words is "forty-two million, five hundred fifty thousand, four hundred thirty".