42643042 has 32 divisors (see below), whose sum is σ = 71737344. Its totient is φ = 18878400.

The previous prime is 42643037. The next prime is 42643067. The reversal of 42643042 is 24034624.

It is a junction number, because it is equal to n+sod(n) for n = 42642998 and 42643016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153808 + ... + 154084.

It is an arithmetic number, because the mean of its divisors is an integer number (2241792).

Almost surely, 2^42643042 is an apocalyptic number.

42643042 is a deficient number, since it is larger than the sum of its proper divisors (29094302).

42643042 is a wasteful number, since it uses less digits than its factorization.

42643042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 42643042 is about 6530.1640101915. The cubic root of 42643042 is about 349.3676800896.

Adding to 42643042 its reverse (24034624), we get a palindrome (66677666).

The spelling of 42643042 in words is "forty-two million, six hundred forty-three thousand, forty-two".