42420430 has 32 divisors (see below), whose sum is σ = 82813248. Its totient is φ = 15552000.

The previous prime is 42420419. The next prime is 42420439. The reversal of 42420430 is 3402424.

It is a junction number, because it is equal to n+sod(n) for n = 42420398 and 42420407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42420439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18550 + ... + 20710.

It is an arithmetic number, because the mean of its divisors is an integer number (2587914).

Almost surely, 2^42420430 is an apocalyptic number.

42420430 is a deficient number, since it is larger than the sum of its proper divisors (40392818).

42420430 is a wasteful number, since it uses less digits than its factorization.

42420430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 42420430 is about 6513.0968056678. The cubic root of 42420430 is about 348.7586775160.

Adding to 42420430 its reverse (3402424), we get a palindrome (45822854).

The spelling of 42420430 in words is "forty-two million, four hundred twenty thousand, four hundred thirty".