42004430 has 32 divisors (see below), whose sum is σ = 82240704. Its totient is φ = 15353856.

The previous prime is 42004429. The next prime is 42004439. The reversal of 42004430 is 3440024.

It is a junction number, because it is equal to n+sod(n) for n = 42004399 and 42004408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004439) 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, 11822 + ... + 14958.

It is an arithmetic number, because the mean of its divisors is an integer number (2570022).

Almost surely, 2^42004430 is an apocalyptic number.

42004430 is a deficient number, since it is larger than the sum of its proper divisors (40236274).

42004430 is a wasteful number, since it uses less digits than its factorization.

42004430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42004430 is about 6481.0824713160. The cubic root of 42004430 is about 347.6148853273.

Adding to 42004430 its reverse (3440024), we get a palindrome (45444454).

The spelling of 42004430 in words is "forty-two million, four thousand, four hundred thirty".