42340610643 has 4 divisors (see below), whose sum is σ = 56454147528. Its totient is φ = 28227073760.

The previous prime is 42340610639. The next prime is 42340610687. The reversal of 42340610643 is 34601604324.

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

It is a cyclic number.

It is not a de Polignac number, because 42340610643 - 2² = 42340610639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42340610603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7056768438 + ... + 7056768443.

It is an arithmetic number, because the mean of its divisors is an integer number (14113536882).

Almost surely, 2^42340610643 is an apocalyptic number.

42340610643 is a deficient number, since it is larger than the sum of its proper divisors (14113536885).

42340610643 is a wasteful number, since it uses less digits than its factorization.

42340610643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14113536884.

The product of its (nonzero) digits is 41472, while the sum is 33.

The spelling of 42340610643 in words is "forty-two billion, three hundred forty million, six hundred ten thousand, six hundred forty-three".