42430331 has 8 divisors (see below), whose sum is σ = 45218304. Its totient is φ = 39721000.

The previous prime is 42430327. The next prime is 42430357. The reversal of 42430331 is 13303424.

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

It is not a de Polignac number, because 42430331 - 2² = 42430327 is a prime.

It is a super-2 number, since 2×42430331² = 3600665977539122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42430361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18545 + ... + 20706.

It is an arithmetic number, because the mean of its divisors is an integer number (5652288).

Almost surely, 2^42430331 is an apocalyptic number.

42430331 is a deficient number, since it is larger than the sum of its proper divisors (2787973).

42430331 is a wasteful number, since it uses less digits than its factorization.

42430331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39321.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 42430331 is about 6513.8568452185. The cubic root of 42430331 is about 348.7858090267.

Adding to 42430331 its reverse (13303424), we get a palindrome (55733755).

The spelling of 42430331 in words is "forty-two million, four hundred thirty thousand, three hundred thirty-one".