42320434 has 16 divisors (see below), whose sum is σ = 69031872. Its totient is φ = 19341648.

The previous prime is 42320431. The next prime is 42320441. The reversal of 42320434 is 43402324.

It is not an unprimeable number, because it can be changed into a prime (42320431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5224 + ... + 10579.

It is an arithmetic number, because the mean of its divisors is an integer number (4314492).

Almost surely, 2^42320434 is an apocalyptic number.

42320434 is a deficient number, since it is larger than the sum of its proper divisors (26711438).

42320434 is a wasteful number, since it uses less digits than its factorization.

42320434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15921.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 42320434 is about 6505.4157438245. The cubic root of 42320434 is about 348.4844235666.

Adding to 42320434 its reverse (43402324), we get a palindrome (85722758).

The spelling of 42320434 in words is "forty-two million, three hundred twenty thousand, four hundred thirty-four".