42430340234 has 4 divisors (see below), whose sum is σ = 63645510354. Its totient is φ = 21215170116.

The previous prime is 42430340233. The next prime is 42430340263. The reversal of 42430340234 is 43204303424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40314616225 + 2115724009 = 200785^2 + 45997^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42430340197 and 42430340206.

It is not an unprimeable number, because it can be changed into a prime (42430340233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607585057 + ... + 10607585060.

Almost surely, 2^42430340234 is an apocalyptic number.

42430340234 is a deficient number, since it is larger than the sum of its proper divisors (21215170120).

42430340234 is a wasteful number, since it uses less digits than its factorization.

42430340234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21215170119.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 42430340234 its reverse (43204303424), we get a palindrome (85634643658).

The spelling of 42430340234 in words is "forty-two billion, four hundred thirty million, three hundred forty thousand, two hundred thirty-four".