69842161 has 4 divisors (see below), whose sum is σ = 69993472. Its totient is φ = 69690852.

The previous prime is 69842057. The next prime is 69842167. The reversal of 69842161 is 16124896.

It is a happy number.

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 not a de Polignac number, because 69842161 - 2⁷ = 69842033 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 69842161.

It is not an unprimeable number, because it can be changed into a prime (69842167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74961 + ... + 75886.

It is an arithmetic number, because the mean of its divisors is an integer number (17498368).

Almost surely, 2^69842161 is an apocalyptic number.

It is an amenable number.

69842161 is a deficient number, since it is larger than the sum of its proper divisors (151311).

69842161 is a wasteful number, since it uses less digits than its factorization.

69842161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151310.

The product of its digits is 20736, while the sum is 37.

The square root of 69842161 is about 8357.1622576087. The cubic root of 69842161 is about 411.8185351768.

The spelling of 69842161 in words is "sixty-nine million, eight hundred forty-two thousand, one hundred sixty-one".