42161551143 has 4 divisors (see below), whose sum is σ = 56215401528. Its totient is φ = 28107700760.

The previous prime is 42161551141. The next prime is 42161551153. The reversal of 42161551143 is 34115516124.

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 42161551143 - 2¹ = 42161551141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42161551141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7026925188 + ... + 7026925193.

It is an arithmetic number, because the mean of its divisors is an integer number (14053850382).

Almost surely, 2^42161551143 is an apocalyptic number.

42161551143 is a deficient number, since it is larger than the sum of its proper divisors (14053850385).

42161551143 is a wasteful number, since it uses less digits than its factorization.

42161551143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14053850384.

The product of its digits is 14400, while the sum is 33.

The spelling of 42161551143 in words is "forty-two billion, one hundred sixty-one million, five hundred fifty-one thousand, one hundred forty-three".