42745342543 has 4 divisors (see below), whose sum is σ = 42745756768. Its totient is φ = 42744928320.

The previous prime is 42745342537. The next prime is 42745342553. The reversal of 42745342543 is 34524354724.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42745342543 - 2²⁵ = 42711788111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42745342543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42745342553) 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, 85183 + ... + 304543.

It is an arithmetic number, because the mean of its divisors is an integer number (10686439192).

Almost surely, 2^42745342543 is an apocalyptic number.

42745342543 is a deficient number, since it is larger than the sum of its proper divisors (414225).

42745342543 is a wasteful number, since it uses less digits than its factorization.

42745342543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414224.

The product of its digits is 1612800, while the sum is 43.

The spelling of 42745342543 in words is "forty-two billion, seven hundred forty-five million, three hundred forty-two thousand, five hundred forty-three".