42240344234 has 24 divisors (see below), whose sum is σ = 69838342560. Its totient is φ = 19146634760.

The previous prime is 42240344213. The next prime is 42240344239. The reversal of 42240344234 is 43244304224.

It is a self number, because there is not a number n which added to its sum of digits gives 42240344234.

It is not an unprimeable number, because it can be changed into a prime (42240344239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156224 + ... + 329979.

It is an arithmetic number, because the mean of its divisors is an integer number (2909930940).

Almost surely, 2^42240344234 is an apocalyptic number.

42240344234 is a deficient number, since it is larger than the sum of its proper divisors (27597998326).

42240344234 is a wasteful number, since it uses less digits than its factorization.

42240344234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486586 (or 486575 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 42240344234 its reverse (43244304224), we get a palindrome (85484648458).

The spelling of 42240344234 in words is "forty-two billion, two hundred forty million, three hundred forty-four thousand, two hundred thirty-four".