42503430 has 32 divisors (see below), whose sum is σ = 102415104. Its totient is φ = 11289056.

The previous prime is 42503413. The next prime is 42503441. The reversal of 42503430 is 3430524.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42503397 and 42503406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5197 + ... + 10583.

It is an arithmetic number, because the mean of its divisors is an integer number (3200472).

Almost surely, 2^42503430 is an apocalyptic number.

42503430 is an abundant number, since it is smaller than the sum of its proper divisors (59911674).

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

42503430 is a wasteful number, since it uses less digits than its factorization.

42503430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 42503430 is about 6519.4654688862. The cubic root of 42503430 is about 348.9859902478.

Adding to 42503430 its reverse (3430524), we get a palindrome (45933954).

The spelling of 42503430 in words is "forty-two million, five hundred three thousand, four hundred thirty".