42430343887 has 4 divisors (see below), whose sum is σ = 43577109976. Its totient is φ = 41283577800.

The previous prime is 42430343863. The next prime is 42430343909. The reversal of 42430343887 is 78834303424.

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 42430343887 - 2⁷ = 42430343759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42430343587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573382989 + ... + 573383062.

It is an arithmetic number, because the mean of its divisors is an integer number (10894277494).

Almost surely, 2^42430343887 is an apocalyptic number.

42430343887 is a deficient number, since it is larger than the sum of its proper divisors (1146766089).

42430343887 is a wasteful number, since it uses less digits than its factorization.

42430343887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146766088.

The product of its (nonzero) digits is 1548288, while the sum is 46.

The spelling of 42430343887 in words is "forty-two billion, four hundred thirty million, three hundred forty-three thousand, eight hundred eighty-seven".