42384161 has 4 divisors (see below), whose sum is σ = 43751424. Its totient is φ = 41016900.

The previous prime is 42384143. The next prime is 42384217. The reversal of 42384161 is 16148324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42384161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42380161) 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, 683585 + ... + 683646.

It is an arithmetic number, because the mean of its divisors is an integer number (10937856).

Almost surely, 2^42384161 is an apocalyptic number.

42384161 is the 2912-nd centered decagonal number.

It is an amenable number.

42384161 is a deficient number, since it is larger than the sum of its proper divisors (1367263).

42384161 is a wasteful number, since it uses less digits than its factorization.

42384161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367262.

The product of its digits is 4608, while the sum is 29.

The square root of 42384161 is about 6510.3118972903. The cubic root of 42384161 is about 348.6592542339.

The spelling of 42384161 in words is "forty-two million, three hundred eighty-four thousand, one hundred sixty-one".