42021343430 has 24 divisors (see below), whose sum is σ = 83139751296. Its totient is φ = 15280488080.

The previous prime is 42021343423. The next prime is 42021343457. The reversal of 42021343430 is 3434312024.

It is a self number, because there is not a number n which added to its sum of digits gives 42021343430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17362982 + ... + 17365401.

It is an arithmetic number, because the mean of its divisors is an integer number (3464156304).

Almost surely, 2^42021343430 is an apocalyptic number.

42021343430 is a deficient number, since it is larger than the sum of its proper divisors (41118407866).

42021343430 is a wasteful number, since it uses less digits than its factorization.

42021343430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34728412 (or 34728401 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 42021343430 its reverse (3434312024), we get a palindrome (45455655454).

The spelling of 42021343430 in words is "forty-two billion, twenty-one million, three hundred forty-three thousand, four hundred thirty".