42042430 has 8 divisors (see below), whose sum is σ = 75676392. Its totient is φ = 16816968.

The previous prime is 42042389. The next prime is 42042439. The reversal of 42042430 is 3424024.

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

It is a junction number, because it is equal to n+sod(n) for n = 42042398 and 42042407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42042439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102112 + ... + 2102131.

It is an arithmetic number, because the mean of its divisors is an integer number (9459549).

Almost surely, 2^42042430 is an apocalyptic number.

42042430 is a deficient number, since it is larger than the sum of its proper divisors (33633962).

42042430 is a wasteful number, since it uses less digits than its factorization.

42042430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204250.

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

The square root of 42042430 is about 6484.0134176295. The cubic root of 42042430 is about 347.7196789112.

Adding to 42042430 its reverse (3424024), we get a palindrome (45466454).

The spelling of 42042430 in words is "forty-two million, forty-two thousand, four hundred thirty".